wenzelm@5363
|
1 |
Isabelle NEWS -- history user-relevant changes
|
wenzelm@5363
|
2 |
==============================================
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wenzelm@2553
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3 |
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wenzelm@13280
|
4 |
New in this Isabelle release
|
wenzelm@13280
|
5 |
----------------------------
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wenzelm@13280
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6 |
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wenzelm@13280
|
7 |
*** General ***
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wenzelm@13280
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8 |
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wenzelm@13410
|
9 |
* Pure: locale specifications now produce predicate definitions
|
wenzelm@13410
|
10 |
according to the body of text (covering assumptions modulo local
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wenzelm@13410
|
11 |
definitions); predicate "loc_axioms" covers newly introduced text,
|
wenzelm@13410
|
12 |
while "loc" is cumulative wrt. all included locale expressions; the
|
wenzelm@13410
|
13 |
latter view is presented only on export into the global theory
|
wenzelm@13410
|
14 |
context; potential INCOMPATIBILITY, use "(open)" option to fall back
|
wenzelm@13410
|
15 |
on the old view without predicates;
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wenzelm@13410
|
16 |
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wenzelm@13459
|
17 |
* Pure: predefined locales "var" and "struct" are useful for sharing
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wenzelm@13459
|
18 |
parameters (as in CASL, for example); just specify something like
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wenzelm@13459
|
19 |
``var x + var y + struct M'' as import;
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wenzelm@13459
|
20 |
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wenzelm@13463
|
21 |
* Pure: improved thms_containing: proper indexing of facts instead of
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wenzelm@13463
|
22 |
raw theorems; check validity of results wrt. current name space;
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wenzelm@13463
|
23 |
include local facts of proof configuration (also covers active
|
wenzelm@13541
|
24 |
locales), cover fixed variables in index; may use "_" in term
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wenzelm@13541
|
25 |
specification; an optional limit for the number of printed facts may
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wenzelm@13541
|
26 |
be given (the default is 40);
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wenzelm@13541
|
27 |
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wenzelm@13541
|
28 |
* Pure: disallow duplicate fact bindings within new-style theory files
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wenzelm@13541
|
29 |
(batch-mode only);
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wenzelm@13540
|
30 |
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wenzelm@13463
|
31 |
* Provers: improved induct method: assumptions introduced by case
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wenzelm@13463
|
32 |
"foo" are split into "foo.hyps" (from the rule) and "foo.prems" (from
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wenzelm@13463
|
33 |
the goal statement); "foo" still refers to all facts collectively;
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wenzelm@13463
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34 |
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paulson@13550
|
35 |
* Provers: the function blast.overloaded has been removed: all constants
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paulson@13550
|
36 |
are regarded as potentially overloaded, which improves robustness in exchange
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paulson@13550
|
37 |
for slight decrease in efficiency;
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paulson@13550
|
38 |
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wenzelm@13522
|
39 |
* Isar: preview of problems to finish 'show' now produce an error
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wenzelm@13522
|
40 |
rather than just a warning (in interactive mode);
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wenzelm@13522
|
41 |
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wenzelm@13280
|
42 |
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nipkow@13158
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43 |
*** HOL ***
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nipkow@13158
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44 |
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paulson@13587
|
45 |
* function INCOMPATIBILITIES: Pi-sets have been redefined and moved from main
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paulson@13587
|
46 |
HOL to Library/FuncSet; constant "Fun.op o" is now called "Fun.comp";
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paulson@13587
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47 |
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wenzelm@13443
|
48 |
* 'typedef' command has new option "open" to suppress the set
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wenzelm@13443
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49 |
definition;
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wenzelm@13443
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50 |
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wenzelm@13522
|
51 |
* functions Min and Max on finite sets have been introduced (theory
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wenzelm@13522
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52 |
Finite_Set);
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nipkow@13492
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53 |
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wenzelm@13443
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54 |
* attribute [symmetric] now works for relations as well; it turns
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wenzelm@13443
|
55 |
(x,y) : R^-1 into (y,x) : R, and vice versa;
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wenzelm@13443
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56 |
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nipkow@13500
|
57 |
* arith(_tac) now produces a counter example if it cannot prove a theorem.
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nipkow@13500
|
58 |
In ProofGeneral the counter example appears in the trace buffer.
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nipkow@13500
|
59 |
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wenzelm@13443
|
60 |
* arith(_tac) does now know about div k and mod k where k is a numeral
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wenzelm@13443
|
61 |
of type nat or int. It can solve simple goals like
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wenzelm@13443
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62 |
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nipkow@13344
|
63 |
"0 < n ==> n div 2 < (n::nat)"
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wenzelm@13443
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64 |
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wenzelm@13443
|
65 |
but fails if divisibility plays a role like in
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wenzelm@13443
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66 |
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wenzelm@13443
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67 |
"n div 2 + (n+1) div 2 = (n::nat)"
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wenzelm@13443
|
68 |
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wenzelm@13443
|
69 |
* simp's arithmetic capabilities have been enhanced a bit: it now
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wenzelm@13443
|
70 |
takes ~= in premises into account (by performing a case split);
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nipkow@13158
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71 |
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wenzelm@13549
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72 |
* simp reduces "m*(n div m) + n mod m" to n, even if the two summands
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wenzelm@13549
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73 |
are distributed over a sum of terms;
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wenzelm@13549
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74 |
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nipkow@13570
|
75 |
* the simplifier trace now shows the names of the applied rewrite rules
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nipkow@13570
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76 |
|
nipkow@13613
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77 |
* induct over a !!-quantified statement (say !!x1..xn):
|
nipkow@13613
|
78 |
each "case" automatically performs "fix x1 .. xn" with exactly those names.
|
nipkow@13613
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79 |
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paulson@13587
|
80 |
* GroupTheory: converted to Isar theories, using locales with implicit structures;
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paulson@13587
|
81 |
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wenzelm@13549
|
82 |
* Real/HahnBanach: updated and adapted to locales;
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wenzelm@13549
|
83 |
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wenzelm@13549
|
84 |
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wenzelm@13549
|
85 |
*** ZF ***
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wenzelm@13549
|
86 |
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wenzelm@13549
|
87 |
* ZF/Constructible: consistency proof for AC (Gödel's constructible
|
wenzelm@13549
|
88 |
universe, etc.);
|
wenzelm@13549
|
89 |
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wenzelm@13549
|
90 |
* Main ZF: many theories converted to new-style format;
|
nipkow@13518
|
91 |
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wenzelm@13280
|
92 |
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wenzelm@13478
|
93 |
*** ML ***
|
wenzelm@13478
|
94 |
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wenzelm@13478
|
95 |
* Pure: Tactic.prove provides sane interface for internal proofs;
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wenzelm@13478
|
96 |
omits the infamous "standard" operation, so this is more appropriate
|
wenzelm@13478
|
97 |
than prove_goalw_cterm in many situations (e.g. in simprocs);
|
wenzelm@13478
|
98 |
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wenzelm@13478
|
99 |
* Pure: improved error reporting of simprocs;
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wenzelm@13478
|
100 |
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wenzelm@13478
|
101 |
* Provers: Simplifier.simproc(_i) provides sane interface for setting
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wenzelm@13478
|
102 |
up simprocs;
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wenzelm@13478
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103 |
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wenzelm@13478
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104 |
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wenzelm@13280
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105 |
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wenzelm@12984
|
106 |
New in Isabelle2002 (March 2002)
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wenzelm@12984
|
107 |
--------------------------------
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wenzelm@11474
|
108 |
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wenzelm@11572
|
109 |
*** Document preparation ***
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wenzelm@11572
|
110 |
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wenzelm@11842
|
111 |
* greatly simplified document preparation setup, including more
|
wenzelm@11842
|
112 |
graceful interpretation of isatool usedir -i/-d/-D options, and more
|
wenzelm@11842
|
113 |
instructive isatool mkdir; users should basically be able to get
|
wenzelm@12899
|
114 |
started with "isatool mkdir HOL Test && isatool make"; alternatively,
|
wenzelm@12899
|
115 |
users may run a separate document processing stage manually like this:
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wenzelm@12899
|
116 |
"isatool usedir -D output HOL Test && isatool document Test/output";
|
wenzelm@11842
|
117 |
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wenzelm@11842
|
118 |
* theory dependency graph may now be incorporated into documents;
|
wenzelm@11842
|
119 |
isatool usedir -g true will produce session_graph.eps/.pdf for use
|
wenzelm@11842
|
120 |
with \includegraphics of LaTeX;
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wenzelm@11842
|
121 |
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wenzelm@11864
|
122 |
* proper spacing of consecutive markup elements, especially text
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wenzelm@11864
|
123 |
blocks after section headings;
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wenzelm@11864
|
124 |
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wenzelm@11572
|
125 |
* support bold style (for single symbols only), input syntax is like
|
wenzelm@11572
|
126 |
this: "\<^bold>\<alpha>" or "\<^bold>A";
|
wenzelm@11572
|
127 |
|
wenzelm@11814
|
128 |
* \<bullet> is now output as bold \cdot by default, which looks much
|
wenzelm@11572
|
129 |
better in printed text;
|
wenzelm@11572
|
130 |
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wenzelm@11712
|
131 |
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>;
|
wenzelm@11712
|
132 |
note that these symbols are currently unavailable in Proof General /
|
wenzelm@12769
|
133 |
X-Symbol; new symbols \<zero>, \<one>, ..., \<nine>, and \<euro>;
|
wenzelm@12690
|
134 |
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wenzelm@12690
|
135 |
* isatool latex no longer depends on changed TEXINPUTS, instead
|
wenzelm@12690
|
136 |
isatool document copies the Isabelle style files to the target
|
wenzelm@12690
|
137 |
location;
|
wenzelm@11712
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138 |
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wenzelm@11572
|
139 |
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wenzelm@11633
|
140 |
*** Isar ***
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wenzelm@11633
|
141 |
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wenzelm@12312
|
142 |
* Pure/Provers: improved proof by cases and induction;
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wenzelm@12280
|
143 |
- 'case' command admits impromptu naming of parameters (such as
|
wenzelm@12280
|
144 |
"case (Suc n)");
|
wenzelm@12280
|
145 |
- 'induct' method divinates rule instantiation from the inductive
|
wenzelm@12280
|
146 |
claim; no longer requires excessive ?P bindings for proper
|
wenzelm@12280
|
147 |
instantiation of cases;
|
wenzelm@12280
|
148 |
- 'induct' method properly enumerates all possibilities of set/type
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wenzelm@12280
|
149 |
rules; as a consequence facts may be also passed through *type*
|
wenzelm@12280
|
150 |
rules without further ado;
|
wenzelm@12280
|
151 |
- 'induct' method now derives symbolic cases from the *rulified*
|
wenzelm@12280
|
152 |
rule (before it used to rulify cases stemming from the internal
|
wenzelm@12280
|
153 |
atomized version); this means that the context of a non-atomic
|
wenzelm@12280
|
154 |
statement becomes is included in the hypothesis, avoiding the
|
wenzelm@12280
|
155 |
slightly cumbersome show "PROP ?case" form;
|
wenzelm@12280
|
156 |
- 'induct' may now use elim-style induction rules without chaining
|
wenzelm@12280
|
157 |
facts, using ``missing'' premises from the goal state; this allows
|
wenzelm@12280
|
158 |
rules stemming from inductive sets to be applied in unstructured
|
wenzelm@12280
|
159 |
scripts, while still benefitting from proper handling of non-atomic
|
wenzelm@12280
|
160 |
statements; NB: major inductive premises need to be put first, all
|
wenzelm@12280
|
161 |
the rest of the goal is passed through the induction;
|
wenzelm@12280
|
162 |
- 'induct' proper support for mutual induction involving non-atomic
|
wenzelm@12280
|
163 |
rule statements (uses the new concept of simultaneous goals, see
|
wenzelm@12280
|
164 |
below);
|
wenzelm@12853
|
165 |
- append all possible rule selections, but only use the first
|
wenzelm@12853
|
166 |
success (no backtracking);
|
wenzelm@11995
|
167 |
- removed obsolete "(simplified)" and "(stripped)" options of methods;
|
wenzelm@12754
|
168 |
- undeclared rule case names default to numbers 1, 2, 3, ...;
|
wenzelm@12754
|
169 |
- added 'print_induct_rules' (covered by help item in recent Proof
|
wenzelm@12754
|
170 |
General versions);
|
wenzelm@11995
|
171 |
- moved induct/cases attributes to Pure, methods to Provers;
|
wenzelm@11995
|
172 |
- generic method setup instantiated for FOL and HOL;
|
wenzelm@11986
|
173 |
|
wenzelm@12163
|
174 |
* Pure: support multiple simultaneous goal statements, for example
|
wenzelm@12163
|
175 |
"have a: A and b: B" (same for 'theorem' etc.); being a pure
|
wenzelm@12163
|
176 |
meta-level mechanism, this acts as if several individual goals had
|
wenzelm@12163
|
177 |
been stated separately; in particular common proof methods need to be
|
wenzelm@12163
|
178 |
repeated in order to cover all claims; note that a single elimination
|
wenzelm@12163
|
179 |
step is *not* sufficient to establish the two conjunctions, so this
|
wenzelm@12163
|
180 |
fails:
|
wenzelm@12163
|
181 |
|
wenzelm@12163
|
182 |
assume "A & B" then have A and B .. (*".." fails*)
|
wenzelm@12163
|
183 |
|
wenzelm@12163
|
184 |
better use "obtain" in situations as above; alternative refer to
|
wenzelm@12163
|
185 |
multi-step methods like 'auto', 'simp_all', 'blast+' etc.;
|
wenzelm@12163
|
186 |
|
wenzelm@12078
|
187 |
* Pure: proper integration with ``locales''; unlike the original
|
wenzelm@12210
|
188 |
version by Florian Kammüller, Isar locales package high-level proof
|
wenzelm@12078
|
189 |
contexts rather than raw logical ones (e.g. we admit to include
|
wenzelm@12280
|
190 |
attributes everywhere); operations on locales include merge and
|
wenzelm@12964
|
191 |
rename; support for implicit arguments (``structures''); simultaneous
|
wenzelm@12964
|
192 |
type-inference over imports and text; see also HOL/ex/Locales.thy for
|
wenzelm@12964
|
193 |
some examples;
|
wenzelm@12078
|
194 |
|
wenzelm@12707
|
195 |
* Pure: the following commands have been ``localized'', supporting a
|
wenzelm@12707
|
196 |
target locale specification "(in name)": 'lemma', 'theorem',
|
wenzelm@12707
|
197 |
'corollary', 'lemmas', 'theorems', 'declare'; the results will be
|
wenzelm@12707
|
198 |
stored both within the locale and at the theory level (exported and
|
wenzelm@12707
|
199 |
qualified by the locale name);
|
wenzelm@12707
|
200 |
|
wenzelm@12964
|
201 |
* Pure: theory goals may now be specified in ``long'' form, with
|
wenzelm@12964
|
202 |
ad-hoc contexts consisting of arbitrary locale elements. for example
|
wenzelm@12964
|
203 |
``lemma foo: fixes x assumes "A x" shows "B x"'' (local syntax and
|
wenzelm@12964
|
204 |
definitions may be given, too); the result is a meta-level rule with
|
wenzelm@12964
|
205 |
the context elements being discharged in the obvious way;
|
wenzelm@12964
|
206 |
|
wenzelm@12964
|
207 |
* Pure: new proof command 'using' allows to augment currently used
|
wenzelm@12964
|
208 |
facts after a goal statement ('using' is syntactically analogous to
|
wenzelm@12964
|
209 |
'apply', but acts on the goal's facts only); this allows chained facts
|
wenzelm@12964
|
210 |
to be separated into parts given before and after a claim, as in
|
wenzelm@12964
|
211 |
``from a and b have C using d and e <proof>'';
|
wenzelm@12078
|
212 |
|
wenzelm@11722
|
213 |
* Pure: renamed "antecedent" case to "rule_context";
|
wenzelm@11722
|
214 |
|
wenzelm@12964
|
215 |
* Pure: new 'judgment' command records explicit information about the
|
wenzelm@12964
|
216 |
object-logic embedding (used by several tools internally); no longer
|
wenzelm@12964
|
217 |
use hard-wired "Trueprop";
|
wenzelm@12964
|
218 |
|
wenzelm@11738
|
219 |
* Pure: added 'corollary' command;
|
wenzelm@11738
|
220 |
|
wenzelm@11722
|
221 |
* Pure: fixed 'token_translation' command;
|
wenzelm@11722
|
222 |
|
wenzelm@11899
|
223 |
* Pure: removed obsolete 'exported' attribute;
|
wenzelm@11899
|
224 |
|
wenzelm@11933
|
225 |
* Pure: dummy pattern "_" in is/let is now automatically lifted over
|
wenzelm@11933
|
226 |
bound variables: "ALL x. P x --> Q x" (is "ALL x. _ --> ?C x")
|
wenzelm@11899
|
227 |
supersedes more cumbersome ... (is "ALL x. _ x --> ?C x");
|
wenzelm@11899
|
228 |
|
wenzelm@11952
|
229 |
* Pure: method 'atomize' presents local goal premises as object-level
|
wenzelm@11952
|
230 |
statements (atomic meta-level propositions); setup controlled via
|
wenzelm@11952
|
231 |
rewrite rules declarations of 'atomize' attribute; example
|
wenzelm@11952
|
232 |
application: 'induct' method with proper rule statements in improper
|
wenzelm@11952
|
233 |
proof *scripts*;
|
wenzelm@11952
|
234 |
|
wenzelm@12106
|
235 |
* Pure: emulation of instantiation tactics (rule_tac, cut_tac, etc.)
|
wenzelm@12106
|
236 |
now consider the syntactic context of assumptions, giving a better
|
wenzelm@12106
|
237 |
chance to get type-inference of the arguments right (this is
|
wenzelm@12106
|
238 |
especially important for locales);
|
wenzelm@12106
|
239 |
|
wenzelm@12312
|
240 |
* Pure: "sorry" no longer requires quick_and_dirty in interactive
|
wenzelm@12312
|
241 |
mode;
|
wenzelm@12312
|
242 |
|
wenzelm@12405
|
243 |
* Pure/obtain: the formal conclusion "thesis", being marked as
|
wenzelm@12405
|
244 |
``internal'', may no longer be reference directly in the text;
|
wenzelm@12405
|
245 |
potential INCOMPATIBILITY, may need to use "?thesis" in rare
|
wenzelm@12405
|
246 |
situations;
|
wenzelm@12405
|
247 |
|
wenzelm@12405
|
248 |
* Pure: generic 'sym' attribute which declares a rule both as pure
|
wenzelm@12405
|
249 |
'elim?' and for the 'symmetric' operation;
|
wenzelm@12405
|
250 |
|
wenzelm@12877
|
251 |
* Pure: marginal comments ``--'' may now occur just anywhere in the
|
wenzelm@12877
|
252 |
text; the fixed correlation with particular command syntax has been
|
wenzelm@12877
|
253 |
discontinued;
|
wenzelm@12877
|
254 |
|
berghofe@13023
|
255 |
* Pure: new method 'rules' is particularly well-suited for proof
|
berghofe@13023
|
256 |
search in intuitionistic logic; a bit slower than 'blast' or 'fast',
|
berghofe@13023
|
257 |
but often produces more compact proof terms with less detours;
|
berghofe@13023
|
258 |
|
wenzelm@12364
|
259 |
* Pure/Provers/classical: simplified integration with pure rule
|
wenzelm@12364
|
260 |
attributes and methods; the classical "intro?/elim?/dest?"
|
wenzelm@12364
|
261 |
declarations coincide with the pure ones; the "rule" method no longer
|
wenzelm@12364
|
262 |
includes classically swapped intros; "intro" and "elim" methods no
|
wenzelm@12364
|
263 |
longer pick rules from the context; also got rid of ML declarations
|
wenzelm@12364
|
264 |
AddXIs/AddXEs/AddXDs; all of this has some potential for
|
wenzelm@12364
|
265 |
INCOMPATIBILITY;
|
wenzelm@12364
|
266 |
|
wenzelm@12405
|
267 |
* Provers/classical: attribute 'swapped' produces classical inversions
|
wenzelm@12405
|
268 |
of introduction rules;
|
wenzelm@12405
|
269 |
|
wenzelm@12364
|
270 |
* Provers/simplifier: 'simplified' attribute may refer to explicit
|
wenzelm@12364
|
271 |
rules instead of full simplifier context; 'iff' attribute handles
|
wenzelm@12364
|
272 |
conditional rules;
|
wenzelm@11936
|
273 |
|
wenzelm@11745
|
274 |
* HOL: 'typedef' now allows alternative names for Rep/Abs morphisms;
|
wenzelm@11745
|
275 |
|
wenzelm@11690
|
276 |
* HOL: 'recdef' now fails on unfinished automated proofs, use
|
wenzelm@11633
|
277 |
"(permissive)" option to recover old behavior;
|
wenzelm@11633
|
278 |
|
wenzelm@11933
|
279 |
* HOL: 'inductive' no longer features separate (collective) attributes
|
wenzelm@11933
|
280 |
for 'intros' (was found too confusing);
|
wenzelm@11933
|
281 |
|
wenzelm@12405
|
282 |
* HOL: properly declared induction rules less_induct and
|
wenzelm@12405
|
283 |
wf_induct_rule;
|
wenzelm@12405
|
284 |
|
kleing@11788
|
285 |
|
wenzelm@11474
|
286 |
*** HOL ***
|
wenzelm@11474
|
287 |
|
wenzelm@11702
|
288 |
* HOL: moved over to sane numeral syntax; the new policy is as
|
wenzelm@11702
|
289 |
follows:
|
wenzelm@11702
|
290 |
|
wenzelm@11702
|
291 |
- 0 and 1 are polymorphic constants, which are defined on any
|
wenzelm@11702
|
292 |
numeric type (nat, int, real etc.);
|
wenzelm@11702
|
293 |
|
wenzelm@11702
|
294 |
- 2, 3, 4, ... and -1, -2, -3, ... are polymorphic numerals, based
|
wenzelm@11702
|
295 |
binary representation internally;
|
wenzelm@11702
|
296 |
|
wenzelm@11702
|
297 |
- type nat has special constructor Suc, and generally prefers Suc 0
|
wenzelm@11702
|
298 |
over 1::nat and Suc (Suc 0) over 2::nat;
|
wenzelm@11702
|
299 |
|
wenzelm@12364
|
300 |
This change may cause significant problems of INCOMPATIBILITY; here
|
wenzelm@12364
|
301 |
are some hints on converting existing sources:
|
wenzelm@11702
|
302 |
|
wenzelm@11702
|
303 |
- due to the new "num" token, "-0" and "-1" etc. are now atomic
|
wenzelm@11702
|
304 |
entities, so expressions involving "-" (unary or binary minus) need
|
wenzelm@11702
|
305 |
to be spaced properly;
|
wenzelm@11702
|
306 |
|
wenzelm@11702
|
307 |
- existing occurrences of "1" may need to be constraint "1::nat" or
|
wenzelm@11702
|
308 |
even replaced by Suc 0; similar for old "2";
|
wenzelm@11702
|
309 |
|
wenzelm@11702
|
310 |
- replace "#nnn" by "nnn", and "#-nnn" by "-nnn";
|
wenzelm@11702
|
311 |
|
wenzelm@11702
|
312 |
- remove all special provisions on numerals in proofs;
|
wenzelm@11702
|
313 |
|
wenzelm@13042
|
314 |
* HOL: simp rules nat_number expand numerals on nat to Suc/0
|
wenzelm@12837
|
315 |
representation (depends on bin_arith_simps in the default context);
|
wenzelm@12837
|
316 |
|
wenzelm@12736
|
317 |
* HOL: symbolic syntax for x^2 (numeral 2);
|
wenzelm@12736
|
318 |
|
wenzelm@12335
|
319 |
* HOL: the class of all HOL types is now called "type" rather than
|
wenzelm@12335
|
320 |
"term"; INCOMPATIBILITY, need to adapt references to this type class
|
wenzelm@12335
|
321 |
in axclass/classes, instance/arities, and (usually rare) occurrences
|
wenzelm@12335
|
322 |
in typings (of consts etc.); internally the class is called
|
wenzelm@12335
|
323 |
"HOL.type", ML programs should refer to HOLogic.typeS;
|
wenzelm@12335
|
324 |
|
wenzelm@12280
|
325 |
* HOL/record package improvements:
|
wenzelm@12280
|
326 |
- new derived operations "fields" to build a partial record section,
|
wenzelm@12280
|
327 |
"extend" to promote a fixed record to a record scheme, and
|
wenzelm@12280
|
328 |
"truncate" for the reverse; cf. theorems "xxx.defs", which are *not*
|
wenzelm@12280
|
329 |
declared as simp by default;
|
wenzelm@12587
|
330 |
- shared operations ("more", "fields", etc.) now need to be always
|
wenzelm@12587
|
331 |
qualified) --- potential INCOMPATIBILITY;
|
wenzelm@12280
|
332 |
- removed "make_scheme" operations (use "make" with "extend") --
|
wenzelm@12280
|
333 |
INCOMPATIBILITY;
|
wenzelm@11937
|
334 |
- removed "more" class (simply use "term") -- INCOMPATIBILITY;
|
wenzelm@12253
|
335 |
- provides cases/induct rules for use with corresponding Isar
|
wenzelm@12253
|
336 |
methods (for concrete records, record schemes, concrete more
|
wenzelm@12280
|
337 |
parts, and schematic more parts -- in that order);
|
wenzelm@11930
|
338 |
- internal definitions directly based on a light-weight abstract
|
wenzelm@11930
|
339 |
theory of product types over typedef rather than datatype;
|
wenzelm@11930
|
340 |
|
berghofe@13023
|
341 |
* HOL: generic code generator for generating executable ML code from
|
berghofe@13023
|
342 |
specifications; specific support for HOL constructs such as inductive
|
berghofe@13023
|
343 |
datatypes and sets, as well as recursive functions; can be invoked
|
berghofe@13023
|
344 |
via 'generate_code' theory section;
|
berghofe@13023
|
345 |
|
wenzelm@11933
|
346 |
* HOL: canonical cases/induct rules for n-tuples (n = 3..7);
|
wenzelm@11933
|
347 |
|
wenzelm@11802
|
348 |
* HOL: concrete setsum syntax "\<Sum>i:A. b" == "setsum (%i. b) A"
|
wenzelm@11802
|
349 |
(beware of argument permutation!);
|
wenzelm@11802
|
350 |
|
wenzelm@11657
|
351 |
* HOL: linorder_less_split superseded by linorder_cases;
|
wenzelm@11657
|
352 |
|
wenzelm@12917
|
353 |
* HOL/List: "nodups" renamed to "distinct";
|
nipkow@12889
|
354 |
|
wenzelm@11633
|
355 |
* HOL: added "The" definite description operator; move Hilbert's "Eps"
|
wenzelm@11633
|
356 |
to peripheral theory "Hilbert_Choice";
|
wenzelm@11437
|
357 |
|
wenzelm@11572
|
358 |
* HOL: made split_all_tac safe; EXISTING PROOFS MAY FAIL OR LOOP, so
|
wenzelm@11572
|
359 |
in this (rare) case use:
|
wenzelm@11572
|
360 |
|
wenzelm@11572
|
361 |
delSWrapper "split_all_tac"
|
wenzelm@11572
|
362 |
addSbefore ("unsafe_split_all_tac", unsafe_split_all_tac)
|
wenzelm@11572
|
363 |
|
wenzelm@11572
|
364 |
* HOL: added safe wrapper "split_conv_tac" to claset; EXISTING PROOFS
|
wenzelm@11474
|
365 |
MAY FAIL;
|
nipkow@11361
|
366 |
|
wenzelm@11572
|
367 |
* HOL: introduced f^n = f o ... o f; warning: due to the limits of
|
wenzelm@11572
|
368 |
Isabelle's type classes, ^ on functions and relations has too general
|
wenzelm@11572
|
369 |
a domain, namely ('a * 'b) set and 'a => 'b; this means that it may be
|
wenzelm@11572
|
370 |
necessary to attach explicit type constraints;
|
nipkow@11307
|
371 |
|
wenzelm@12917
|
372 |
* HOL/Relation: the prefix name of the infix "O" has been changed from
|
wenzelm@12917
|
373 |
"comp" to "rel_comp"; INCOMPATIBILITY: a few theorems have been
|
wenzelm@12917
|
374 |
renamed accordingly (eg "compI" -> "rel_compI").
|
nipkow@12489
|
375 |
|
wenzelm@11487
|
376 |
* HOL: syntax translations now work properly with numerals and records
|
wenzelm@11487
|
377 |
expressions;
|
wenzelm@11474
|
378 |
|
wenzelm@12457
|
379 |
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead
|
wenzelm@12457
|
380 |
of "lam" -- INCOMPATIBILITY;
|
wenzelm@11474
|
381 |
|
wenzelm@11933
|
382 |
* HOL: got rid of some global declarations (potential INCOMPATIBILITY
|
wenzelm@11933
|
383 |
for ML tools): const "()" renamed "Product_Type.Unity", type "unit"
|
wenzelm@11933
|
384 |
renamed "Product_Type.unit";
|
wenzelm@11611
|
385 |
|
nipkow@12564
|
386 |
* HOL: renamed rtrancl_into_rtrancl2 to converse_rtrancl_into_rtrancl
|
nipkow@12564
|
387 |
|
wenzelm@12924
|
388 |
* HOL: removed obsolete theorem "optionE" (use "option.exhaust", or
|
wenzelm@12924
|
389 |
the "cases" method);
|
wenzelm@12924
|
390 |
|
wenzelm@12597
|
391 |
* HOL/GroupTheory: group theory examples including Sylow's theorem (by
|
wenzelm@12597
|
392 |
Florian Kammüller);
|
wenzelm@12597
|
393 |
|
wenzelm@12608
|
394 |
* HOL/IMP: updated and converted to new-style theory format; several
|
wenzelm@12608
|
395 |
parts turned into readable document, with proper Isar proof texts and
|
wenzelm@12608
|
396 |
some explanations (by Gerwin Klein);
|
wenzelm@12597
|
397 |
|
wenzelm@12734
|
398 |
* HOL-Real: added Complex_Numbers (by Gertrud Bauer);
|
wenzelm@12734
|
399 |
|
wenzelm@12690
|
400 |
* HOL-Hyperreal is now a logic image;
|
wenzelm@12690
|
401 |
|
wenzelm@11611
|
402 |
|
wenzelm@12022
|
403 |
*** HOLCF ***
|
wenzelm@12022
|
404 |
|
wenzelm@12622
|
405 |
* Isar: consts/constdefs supports mixfix syntax for continuous
|
wenzelm@12622
|
406 |
operations;
|
wenzelm@12622
|
407 |
|
wenzelm@12622
|
408 |
* Isar: domain package adapted to new-style theory format, e.g. see
|
wenzelm@12622
|
409 |
HOLCF/ex/Dnat.thy;
|
wenzelm@12622
|
410 |
|
wenzelm@12622
|
411 |
* theory Lift: proper use of rep_datatype lift instead of ML hacks --
|
wenzelm@12280
|
412 |
potential INCOMPATIBILITY; now use plain induct_tac instead of former
|
wenzelm@12280
|
413 |
lift.induct_tac, always use UU instead of Undef;
|
wenzelm@12022
|
414 |
|
wenzelm@12597
|
415 |
* HOLCF/IMP: updated and converted to new-style theory;
|
wenzelm@12597
|
416 |
|
wenzelm@12022
|
417 |
|
wenzelm@11474
|
418 |
*** ZF ***
|
wenzelm@11474
|
419 |
|
wenzelm@12622
|
420 |
* Isar: proper integration of logic-specific tools and packages,
|
wenzelm@12622
|
421 |
including theory commands '(co)inductive', '(co)datatype',
|
wenzelm@12622
|
422 |
'rep_datatype', 'inductive_cases', as well as methods 'ind_cases',
|
wenzelm@12622
|
423 |
'induct_tac', 'case_tac', and 'typecheck' (with attribute 'TC');
|
wenzelm@12622
|
424 |
|
wenzelm@12622
|
425 |
* theory Main no longer includes AC; for the Axiom of Choice, base
|
wenzelm@12622
|
426 |
your theory on Main_ZFC;
|
wenzelm@12622
|
427 |
|
wenzelm@12622
|
428 |
* the integer library now covers quotients and remainders, with many
|
wenzelm@12622
|
429 |
laws relating division to addition, multiplication, etc.;
|
paulson@12563
|
430 |
|
wenzelm@12280
|
431 |
* ZF/UNITY: Chandy and Misra's UNITY is now available in ZF, giving a
|
wenzelm@12280
|
432 |
typeless version of the formalism;
|
wenzelm@12280
|
433 |
|
wenzelm@13025
|
434 |
* ZF/AC, Coind, IMP, Resid: updated and converted to new-style theory
|
wenzelm@13025
|
435 |
format;
|
wenzelm@12608
|
436 |
|
wenzelm@12280
|
437 |
* ZF/Induct: new directory for examples of inductive definitions,
|
wenzelm@12608
|
438 |
including theory Multiset for multiset orderings; converted to
|
wenzelm@12608
|
439 |
new-style theory format;
|
wenzelm@12177
|
440 |
|
wenzelm@13025
|
441 |
* ZF: many new theorems about lists, ordinals, etc.;
|
paulson@12850
|
442 |
|
wenzelm@11474
|
443 |
|
wenzelm@11474
|
444 |
*** General ***
|
wenzelm@11474
|
445 |
|
wenzelm@12280
|
446 |
* Pure/kernel: meta-level proof terms (by Stefan Berghofer); reference
|
wenzelm@12280
|
447 |
variable proof controls level of detail: 0 = no proofs (only oracle
|
wenzelm@12280
|
448 |
dependencies), 1 = lemma dependencies, 2 = compact proof terms; see
|
wenzelm@12280
|
449 |
also ref manual for further ML interfaces;
|
wenzelm@12280
|
450 |
|
wenzelm@12280
|
451 |
* Pure/axclass: removed obsolete ML interface
|
wenzelm@12280
|
452 |
goal_subclass/goal_arity;
|
wenzelm@12280
|
453 |
|
wenzelm@12280
|
454 |
* Pure/syntax: new token syntax "num" for plain numerals (without "#"
|
wenzelm@12280
|
455 |
of "xnum"); potential INCOMPATIBILITY, since -0, -1 etc. are now
|
wenzelm@12280
|
456 |
separate tokens, so expressions involving minus need to be spaced
|
wenzelm@12280
|
457 |
properly;
|
wenzelm@12280
|
458 |
|
wenzelm@12312
|
459 |
* Pure/syntax: support non-oriented infixes, using keyword "infix"
|
wenzelm@12312
|
460 |
rather than "infixl" or "infixr";
|
wenzelm@12312
|
461 |
|
wenzelm@12312
|
462 |
* Pure/syntax: concrete syntax for dummy type variables admits genuine
|
wenzelm@12312
|
463 |
sort constraint specifications in type inference; e.g. "x::_::foo"
|
wenzelm@12312
|
464 |
ensures that the type of "x" is of sort "foo" (but not necessarily a
|
wenzelm@12312
|
465 |
type variable);
|
wenzelm@12280
|
466 |
|
wenzelm@12280
|
467 |
* Pure/syntax: print modes "type_brackets" and "no_type_brackets"
|
wenzelm@12280
|
468 |
control output of nested => (types); the default behavior is
|
wenzelm@12280
|
469 |
"type_brackets";
|
wenzelm@12280
|
470 |
|
wenzelm@12280
|
471 |
* Pure/syntax: builtin parse translation for "_constify" turns valued
|
wenzelm@11817
|
472 |
tokens into AST constants;
|
wenzelm@11474
|
473 |
|
wenzelm@12280
|
474 |
* Pure/syntax: prefer later declarations of translations and print
|
wenzelm@12280
|
475 |
translation functions; potential INCOMPATIBILITY: need to reverse
|
wenzelm@12280
|
476 |
multiple declarations for same syntax element constant;
|
wenzelm@12280
|
477 |
|
wenzelm@12832
|
478 |
* Pure/show_hyps reset by default (in accordance to existing Isar
|
wenzelm@12832
|
479 |
practice);
|
wenzelm@12832
|
480 |
|
wenzelm@12280
|
481 |
* Provers/classical: renamed addaltern to addafter, addSaltern to
|
wenzelm@12280
|
482 |
addSafter;
|
wenzelm@12280
|
483 |
|
wenzelm@12280
|
484 |
* Provers/clasimp: ``iff'' declarations now handle conditional rules
|
wenzelm@12280
|
485 |
as well;
|
wenzelm@12253
|
486 |
|
wenzelm@12538
|
487 |
* system: tested support for MacOS X; should be able to get Isabelle +
|
wenzelm@12538
|
488 |
Proof General to work in a plain Terminal after installing Poly/ML
|
wenzelm@12538
|
489 |
(e.g. from the Isabelle distribution area) and GNU bash alone
|
wenzelm@12538
|
490 |
(e.g. from http://www.apple.com); full X11, XEmacs and X-Symbol
|
wenzelm@12538
|
491 |
support requires further installations, e.g. from
|
wenzelm@12538
|
492 |
http://fink.sourceforge.net/);
|
wenzelm@12538
|
493 |
|
wenzelm@12280
|
494 |
* system: support Poly/ML 4.1.1 (able to manage larger heaps);
|
wenzelm@11551
|
495 |
|
wenzelm@12753
|
496 |
* system: reduced base memory usage by Poly/ML (approx. 20 MB instead
|
wenzelm@12753
|
497 |
of 40 MB), cf. ML_OPTIONS;
|
wenzelm@12753
|
498 |
|
wenzelm@11633
|
499 |
* system: Proof General keywords specification is now part of the
|
wenzelm@11633
|
500 |
Isabelle distribution (see etc/isar-keywords.el);
|
wenzelm@11633
|
501 |
|
wenzelm@12728
|
502 |
* system: support for persistent Proof General sessions (refrain from
|
wenzelm@12728
|
503 |
outdating all loaded theories on startup); user may create writable
|
wenzelm@12728
|
504 |
logic images like this: ``isabelle -q HOL Test'';
|
wenzelm@12597
|
505 |
|
wenzelm@11551
|
506 |
* system: smart selection of Isabelle process versus Isabelle
|
wenzelm@11572
|
507 |
interface, accommodates case-insensitive file systems (e.g. HFS+); may
|
wenzelm@11572
|
508 |
run both "isabelle" and "Isabelle" even if file names are badly
|
wenzelm@11572
|
509 |
damaged (executable inspects the case of the first letter of its own
|
wenzelm@11572
|
510 |
name); added separate "isabelle-process" and "isabelle-interface";
|
wenzelm@11551
|
511 |
|
wenzelm@12472
|
512 |
* system: refrain from any attempt at filtering input streams; no
|
wenzelm@12472
|
513 |
longer support ``8bit'' encoding of old isabelle font, instead proper
|
wenzelm@12472
|
514 |
iso-latin characters may now be used; the related isatools
|
wenzelm@12472
|
515 |
"symbolinput" and "nonascii" have disappeared as well;
|
wenzelm@12472
|
516 |
|
wenzelm@12472
|
517 |
* system: removed old "xterm" interface (the print modes "xterm" and
|
wenzelm@12472
|
518 |
"xterm_color" are still available for direct use in a suitable
|
wenzelm@12472
|
519 |
terminal);
|
wenzelm@12472
|
520 |
|
paulson@11314
|
521 |
|
oheimb@11169
|
522 |
|
wenzelm@11062
|
523 |
New in Isabelle99-2 (February 2001)
|
wenzelm@11062
|
524 |
-----------------------------------
|
wenzelm@11062
|
525 |
|
nipkow@10224
|
526 |
*** Overview of INCOMPATIBILITIES ***
|
nipkow@10224
|
527 |
|
paulson@11241
|
528 |
* HOL: please note that theories in the Library and elsewhere often use the
|
paulson@11241
|
529 |
new-style (Isar) format; to refer to their theorems in an ML script you must
|
wenzelm@12622
|
530 |
bind them to ML identifers by e.g. val thm_name = thm "thm_name";
|
paulson@11241
|
531 |
|
wenzelm@11043
|
532 |
* HOL: inductive package no longer splits induction rule aggressively,
|
wenzelm@11043
|
533 |
but only as far as specified by the introductions given; the old
|
oheimb@11130
|
534 |
format may be recovered via ML function complete_split_rule or attribute
|
wenzelm@11043
|
535 |
'split_rule (complete)';
|
wenzelm@11043
|
536 |
|
wenzelm@10998
|
537 |
* HOL: induct renamed to lfp_induct, lfp_Tarski to lfp_unfold,
|
wenzelm@10998
|
538 |
gfp_Tarski to gfp_unfold;
|
nipkow@10224
|
539 |
|
paulson@10288
|
540 |
* HOL: contrapos, contrapos2 renamed to contrapos_nn, contrapos_pp;
|
paulson@10288
|
541 |
|
wenzelm@10858
|
542 |
* HOL: infix "dvd" now has priority 50 rather than 70 (because it is a
|
wenzelm@10858
|
543 |
relation); infix "^^" has been renamed "``"; infix "``" has been
|
wenzelm@10858
|
544 |
renamed "`"; "univalent" has been renamed "single_valued";
|
nipkow@10793
|
545 |
|
wenzelm@10998
|
546 |
* HOL/Real: "rinv" and "hrinv" replaced by overloaded "inverse"
|
wenzelm@10998
|
547 |
operation;
|
wenzelm@10998
|
548 |
|
nipkow@10868
|
549 |
* HOLCF: infix "`" has been renamed "$"; the symbol syntax is \<cdot>;
|
nipkow@10856
|
550 |
|
wenzelm@10391
|
551 |
* Isar: 'obtain' no longer declares "that" fact as simp/intro;
|
wenzelm@10391
|
552 |
|
wenzelm@10401
|
553 |
* Isar/HOL: method 'induct' now handles non-atomic goals; as a
|
wenzelm@10401
|
554 |
consequence, it is no longer monotonic wrt. the local goal context
|
wenzelm@10401
|
555 |
(which is now passed through the inductive cases);
|
wenzelm@10401
|
556 |
|
wenzelm@10976
|
557 |
* Document preparation: renamed standard symbols \<ll> to \<lless> and
|
wenzelm@10976
|
558 |
\<gg> to \<ggreater>;
|
wenzelm@10976
|
559 |
|
nipkow@10224
|
560 |
|
wenzelm@10245
|
561 |
*** Document preparation ***
|
wenzelm@10245
|
562 |
|
wenzelm@10858
|
563 |
* \isabellestyle{NAME} selects version of Isabelle output (currently
|
wenzelm@10858
|
564 |
available: are "it" for near math-mode best-style output, "sl" for
|
wenzelm@10858
|
565 |
slanted text style, and "tt" for plain type-writer; if no
|
wenzelm@10858
|
566 |
\isabellestyle command is given, output is according to slanted
|
wenzelm@10858
|
567 |
type-writer);
|
wenzelm@10858
|
568 |
|
wenzelm@10322
|
569 |
* support sub/super scripts (for single symbols only), input syntax is
|
wenzelm@10322
|
570 |
like this: "A\<^sup>*" or "A\<^sup>\<star>";
|
wenzelm@10322
|
571 |
|
wenzelm@10858
|
572 |
* some more standard symbols; see Appendix A of the system manual for
|
wenzelm@11062
|
573 |
the complete list of symbols defined in isabellesym.sty;
|
wenzelm@10858
|
574 |
|
wenzelm@10998
|
575 |
* improved isabelle style files; more abstract symbol implementation
|
wenzelm@10998
|
576 |
(should now use \isamath{...} and \isatext{...} in custom symbol
|
wenzelm@10998
|
577 |
definitions);
|
wenzelm@10998
|
578 |
|
wenzelm@10634
|
579 |
* antiquotation @{goals} and @{subgoals} for output of *dynamic* goals
|
wenzelm@10634
|
580 |
state; Note that presentation of goal states does not conform to
|
wenzelm@10634
|
581 |
actual human-readable proof documents. Please do not include goal
|
wenzelm@10634
|
582 |
states into document output unless you really know what you are doing!
|
wenzelm@10322
|
583 |
|
wenzelm@11062
|
584 |
* proper indentation of antiquoted output with proportional LaTeX
|
wenzelm@11062
|
585 |
fonts;
|
wenzelm@10862
|
586 |
|
wenzelm@11050
|
587 |
* no_document ML operator temporarily disables LaTeX document
|
wenzelm@11050
|
588 |
generation;
|
wenzelm@11050
|
589 |
|
wenzelm@11062
|
590 |
* isatool unsymbolize tunes sources for plain ASCII communication;
|
wenzelm@11062
|
591 |
|
wenzelm@10322
|
592 |
|
wenzelm@10306
|
593 |
*** Isar ***
|
wenzelm@10306
|
594 |
|
wenzelm@10547
|
595 |
* Pure: Isar now suffers initial goal statements to contain unbound
|
wenzelm@10547
|
596 |
schematic variables (this does not conform to actual readable proof
|
wenzelm@10547
|
597 |
documents, due to unpredictable outcome and non-compositional proof
|
wenzelm@10547
|
598 |
checking); users who know what they are doing may use schematic goals
|
wenzelm@10547
|
599 |
for Prolog-style synthesis of proven results;
|
wenzelm@10547
|
600 |
|
wenzelm@10391
|
601 |
* Pure: assumption method (an implicit finishing) now handles actual
|
wenzelm@10391
|
602 |
rules as well;
|
wenzelm@10391
|
603 |
|
wenzelm@10391
|
604 |
* Pure: improved 'obtain' --- moved to Pure, insert "that" into
|
wenzelm@10391
|
605 |
initial goal, declare "that" only as Pure intro (only for single
|
wenzelm@10391
|
606 |
steps); the "that" rule assumption may now be involved in implicit
|
wenzelm@10391
|
607 |
finishing, thus ".." becomes a feasible for trivial obtains;
|
wenzelm@10391
|
608 |
|
wenzelm@10391
|
609 |
* Pure: default proof step now includes 'intro_classes'; thus trivial
|
wenzelm@10391
|
610 |
instance proofs may be performed by "..";
|
wenzelm@10391
|
611 |
|
wenzelm@10391
|
612 |
* Pure: ?thesis / ?this / "..." now work for pure meta-level
|
wenzelm@10391
|
613 |
statements as well;
|
wenzelm@10306
|
614 |
|
wenzelm@11097
|
615 |
* Pure: more robust selection of calculational rules;
|
wenzelm@11097
|
616 |
|
wenzelm@10858
|
617 |
* Pure: the builtin notion of 'finished' goal now includes the ==-refl
|
wenzelm@10858
|
618 |
rule (as well as the assumption rule);
|
wenzelm@10858
|
619 |
|
wenzelm@10858
|
620 |
* Pure: 'thm_deps' command visualizes dependencies of theorems and
|
wenzelm@10858
|
621 |
lemmas, using the graph browser tool;
|
wenzelm@10858
|
622 |
|
wenzelm@10944
|
623 |
* Pure: predict failure of "show" in interactive mode;
|
wenzelm@10944
|
624 |
|
wenzelm@11016
|
625 |
* Pure: 'thms_containing' now takes actual terms as arguments;
|
wenzelm@11016
|
626 |
|
wenzelm@10401
|
627 |
* HOL: improved method 'induct' --- now handles non-atomic goals
|
wenzelm@10401
|
628 |
(potential INCOMPATIBILITY); tuned error handling;
|
wenzelm@10401
|
629 |
|
wenzelm@10557
|
630 |
* HOL: cases and induct rules now provide explicit hints about the
|
wenzelm@10547
|
631 |
number of facts to be consumed (0 for "type" and 1 for "set" rules);
|
wenzelm@10547
|
632 |
any remaining facts are inserted into the goal verbatim;
|
wenzelm@10547
|
633 |
|
wenzelm@10858
|
634 |
* HOL: local contexts (aka cases) may now contain term bindings as
|
wenzelm@10858
|
635 |
well; the 'cases' and 'induct' methods new provide a ?case binding for
|
wenzelm@10858
|
636 |
the result to be shown in each case;
|
wenzelm@10858
|
637 |
|
wenzelm@10770
|
638 |
* HOL: added 'recdef_tc' command;
|
wenzelm@10770
|
639 |
|
wenzelm@11016
|
640 |
* isatool convert assists in eliminating legacy ML scripts;
|
wenzelm@11016
|
641 |
|
wenzelm@10306
|
642 |
|
wenzelm@10245
|
643 |
*** HOL ***
|
wenzelm@10245
|
644 |
|
wenzelm@10245
|
645 |
* HOL/Library: a collection of generic theories to be used together
|
wenzelm@10245
|
646 |
with main HOL; the theory loader path already includes this directory
|
wenzelm@10245
|
647 |
by default; the following existing theories have been moved here:
|
wenzelm@10245
|
648 |
HOL/Induct/Multiset, HOL/Induct/Acc (as Accessible_Part), HOL/While
|
wenzelm@10337
|
649 |
(as While_Combinator), HOL/Lex/Prefix (as List_Prefix);
|
wenzelm@10245
|
650 |
|
wenzelm@10966
|
651 |
* HOL/Unix: "Some aspects of Unix file-system security", a typical
|
wenzelm@10966
|
652 |
modelling and verification task performed in Isabelle/HOL +
|
wenzelm@10966
|
653 |
Isabelle/Isar + Isabelle document preparation (by Markus Wenzel).
|
wenzelm@10966
|
654 |
|
wenzelm@11094
|
655 |
* HOL/Algebra: special summation operator SUM no longer exists, it has
|
wenzelm@11094
|
656 |
been replaced by setsum; infix 'assoc' now has priority 50 (like
|
wenzelm@11094
|
657 |
'dvd'); axiom 'one_not_zero' has been moved from axclass 'ring' to
|
wenzelm@11094
|
658 |
'domain', this makes the theory consistent with mathematical
|
wenzelm@11094
|
659 |
literature;
|
wenzelm@11094
|
660 |
|
wenzelm@10514
|
661 |
* HOL basics: added overloaded operations "inverse" and "divide"
|
wenzelm@10726
|
662 |
(infix "/"), syntax for generic "abs" operation, generic summation
|
wenzelm@11094
|
663 |
operator \<Sum>;
|
wenzelm@10452
|
664 |
|
wenzelm@10391
|
665 |
* HOL/typedef: simplified package, provide more useful rules (see also
|
wenzelm@10391
|
666 |
HOL/subset.thy);
|
wenzelm@10391
|
667 |
|
wenzelm@10915
|
668 |
* HOL/datatype: induction rule for arbitrarily branching datatypes is
|
wenzelm@10915
|
669 |
now expressed as a proper nested rule (old-style tactic scripts may
|
wenzelm@10915
|
670 |
require atomize_strip_tac to cope with non-atomic premises);
|
wenzelm@10915
|
671 |
|
wenzelm@10915
|
672 |
* HOL: renamed theory "Prod" to "Product_Type", renamed "split" rule
|
wenzelm@10915
|
673 |
to "split_conv" (old name still available for compatibility);
|
wenzelm@10915
|
674 |
|
wenzelm@10915
|
675 |
* HOL: improved concrete syntax for strings (e.g. allows translation
|
wenzelm@10915
|
676 |
rules with string literals);
|
wenzelm@10915
|
677 |
|
paulson@12245
|
678 |
* HOL-Real-Hyperreal: this extends HOL-Real with the hyperreals
|
paulson@12245
|
679 |
and Fleuriot's mechanization of analysis, including the transcendental
|
paulson@12245
|
680 |
functions for the reals;
|
paulson@10756
|
681 |
|
wenzelm@11094
|
682 |
* HOL/Real, HOL/Hyperreal: improved arithmetic simplification;
|
wenzelm@10391
|
683 |
|
wenzelm@10858
|
684 |
|
paulson@10474
|
685 |
*** CTT ***
|
paulson@10474
|
686 |
|
wenzelm@10547
|
687 |
* CTT: x-symbol support for Pi, Sigma, -->, : (membership); note that
|
wenzelm@10547
|
688 |
"lam" is displayed as TWO lambda-symbols
|
paulson@10474
|
689 |
|
wenzelm@10547
|
690 |
* CTT: theory Main now available, containing everything (that is, Bool
|
wenzelm@10547
|
691 |
and Arith);
|
wenzelm@10547
|
692 |
|
paulson@10474
|
693 |
|
wenzelm@10391
|
694 |
*** General ***
|
wenzelm@10391
|
695 |
|
wenzelm@10547
|
696 |
* Pure: the Simplifier has been implemented properly as a derived rule
|
wenzelm@10547
|
697 |
outside of the actual kernel (at last!); the overall performance
|
wenzelm@10547
|
698 |
penalty in practical applications is about 50%, while reliability of
|
wenzelm@10547
|
699 |
the Isabelle inference kernel has been greatly improved;
|
wenzelm@10547
|
700 |
|
wenzelm@11112
|
701 |
* print modes "brackets" and "no_brackets" control output of nested =>
|
wenzelm@11112
|
702 |
(types) and ==> (props); the default behaviour is "brackets";
|
wenzelm@11112
|
703 |
|
wenzelm@10391
|
704 |
* Provers: fast_tac (and friends) now handle actual object-logic rules
|
wenzelm@10391
|
705 |
as assumptions as well;
|
wenzelm@10391
|
706 |
|
wenzelm@11124
|
707 |
* system: support Poly/ML 4.0;
|
wenzelm@11124
|
708 |
|
wenzelm@11124
|
709 |
* system: isatool install handles KDE version 1 or 2;
|
wenzelm@11124
|
710 |
|
wenzelm@10391
|
711 |
|
wenzelm@10245
|
712 |
|
wenzelm@10103
|
713 |
New in Isabelle99-1 (October 2000)
|
wenzelm@10103
|
714 |
----------------------------------
|
wenzelm@8015
|
715 |
|
wenzelm@10003
|
716 |
*** Overview of INCOMPATIBILITIES ***
|
paulson@8014
|
717 |
|
wenzelm@8848
|
718 |
* HOL: simplification of natural numbers is much changed; to partly
|
wenzelm@8848
|
719 |
recover the old behaviour (e.g. to prevent n+n rewriting to #2*n)
|
wenzelm@8848
|
720 |
issue the following ML commands:
|
wenzelm@8848
|
721 |
|
wenzelm@8848
|
722 |
Delsimprocs Nat_Numeral_Simprocs.cancel_numerals;
|
wenzelm@8848
|
723 |
Delsimprocs [Nat_Numeral_Simprocs.combine_numerals];
|
paulson@8788
|
724 |
|
wenzelm@10129
|
725 |
* HOL: simplification no longer dives into case-expressions; this is
|
wenzelm@10129
|
726 |
controlled by "t.weak_case_cong" for each datatype t;
|
paulson@8967
|
727 |
|
wenzelm@10003
|
728 |
* HOL: nat_less_induct renamed to less_induct;
|
wenzelm@10003
|
729 |
|
wenzelm@10003
|
730 |
* HOL: systematic renaming of the SOME (Eps) rules, may use isatool
|
wenzelm@10003
|
731 |
fixsome to patch .thy and .ML sources automatically;
|
wenzelm@10003
|
732 |
|
wenzelm@10003
|
733 |
select_equality -> some_equality
|
wenzelm@10003
|
734 |
select_eq_Ex -> some_eq_ex
|
wenzelm@10003
|
735 |
selectI2EX -> someI2_ex
|
wenzelm@10003
|
736 |
selectI2 -> someI2
|
wenzelm@10003
|
737 |
selectI -> someI
|
wenzelm@10003
|
738 |
select1_equality -> some1_equality
|
wenzelm@10003
|
739 |
Eps_sym_eq -> some_sym_eq_trivial
|
wenzelm@10003
|
740 |
Eps_eq -> some_eq_trivial
|
wenzelm@10003
|
741 |
|
wenzelm@10003
|
742 |
* HOL: exhaust_tac on datatypes superceded by new generic case_tac;
|
wenzelm@10003
|
743 |
|
wenzelm@10003
|
744 |
* HOL: removed obsolete theorem binding expand_if (refer to split_if
|
wenzelm@10003
|
745 |
instead);
|
wenzelm@10003
|
746 |
|
wenzelm@10003
|
747 |
* HOL: the recursion equations generated by 'recdef' are now called
|
wenzelm@10003
|
748 |
f.simps instead of f.rules;
|
wenzelm@10003
|
749 |
|
wenzelm@10003
|
750 |
* HOL: qed_spec_mp now also handles bounded ALL as well;
|
wenzelm@10003
|
751 |
|
wenzelm@10003
|
752 |
* HOL: 0 is now overloaded, so the type constraint ":: nat" may
|
wenzelm@10003
|
753 |
sometimes be needed;
|
wenzelm@10003
|
754 |
|
wenzelm@10003
|
755 |
* HOL: the constant for "f``x" is now "image" rather than "op ``";
|
paulson@8014
|
756 |
|
paulson@10065
|
757 |
* HOL: the constant for "f-``x" is now "vimage" rather than "op -``";
|
paulson@10065
|
758 |
|
wenzelm@9330
|
759 |
* HOL: the disjoint sum is now "<+>" instead of "Plus"; the cartesian
|
wenzelm@9330
|
760 |
product is now "<*>" instead of "Times"; the lexicographic product is
|
wenzelm@9330
|
761 |
now "<*lex*>" instead of "**";
|
nipkow@8705
|
762 |
|
wenzelm@10003
|
763 |
* HOL: theory Sexp is now in HOL/Induct examples (it used to be part
|
wenzelm@10003
|
764 |
of main HOL, but was unused); better use HOL's datatype package;
|
paulson@9971
|
765 |
|
wenzelm@10137
|
766 |
* HOL: removed "symbols" syntax for constant "override" of theory Map;
|
wenzelm@10137
|
767 |
the old syntax may be recovered as follows:
|
wenzelm@10137
|
768 |
|
wenzelm@10137
|
769 |
syntax (symbols)
|
wenzelm@10137
|
770 |
override :: "('a ~=> 'b) => ('a ~=> 'b) => ('a ~=> 'b)"
|
wenzelm@10137
|
771 |
(infixl "\\<oplus>" 100)
|
wenzelm@10137
|
772 |
|
wenzelm@8848
|
773 |
* HOL/Real: "rabs" replaced by overloaded "abs" function;
|
wenzelm@8848
|
774 |
|
wenzelm@8887
|
775 |
* HOL/ML: even fewer consts are declared as global (see theories Ord,
|
wenzelm@8887
|
776 |
Lfp, Gfp, WF); this only affects ML packages that refer to const names
|
wenzelm@8887
|
777 |
internally;
|
wenzelm@8887
|
778 |
|
wenzelm@10003
|
779 |
* HOL and ZF: syntax for quotienting wrt an equivalence relation
|
wenzelm@10003
|
780 |
changed from A/r to A//r;
|
wenzelm@9908
|
781 |
|
wenzelm@10003
|
782 |
* ZF: new treatment of arithmetic (nat & int) may break some old
|
wenzelm@10003
|
783 |
proofs;
|
paulson@9388
|
784 |
|
wenzelm@10003
|
785 |
* Isar: renamed some attributes (RS -> THEN, simplify -> simplified,
|
wenzelm@10003
|
786 |
rulify -> rule_format, elimify -> elim_format, ...);
|
paulson@9542
|
787 |
|
wenzelm@9941
|
788 |
* Isar/Provers: intro/elim/dest attributes changed; renamed
|
wenzelm@9941
|
789 |
intro/intro!/intro!! flags to intro!/intro/intro? (in most cases, one
|
wenzelm@9937
|
790 |
should have to change intro!! to intro? only); replaced "delrule" by
|
wenzelm@9937
|
791 |
"rule del";
|
wenzelm@9437
|
792 |
|
wenzelm@9612
|
793 |
* Isar/HOL: renamed "intrs" to "intros" in inductive definitions;
|
wenzelm@9612
|
794 |
|
wenzelm@9437
|
795 |
* Provers: strengthened force_tac by using new first_best_tac;
|
oheimb@9402
|
796 |
|
wenzelm@10003
|
797 |
* LaTeX document preparation: several changes of isabelle.sty (see
|
wenzelm@10003
|
798 |
lib/texinputs);
|
wenzelm@8729
|
799 |
|
paulson@8014
|
800 |
|
wenzelm@8487
|
801 |
*** Document preparation ***
|
wenzelm@8358
|
802 |
|
wenzelm@9198
|
803 |
* formal comments (text blocks etc.) in new-style theories may now
|
wenzelm@9753
|
804 |
contain antiquotations of thm/prop/term/typ/text to be presented
|
wenzelm@9753
|
805 |
according to latex print mode; concrete syntax is like this:
|
wenzelm@9753
|
806 |
@{term[show_types] "f(x) = a + x"};
|
wenzelm@9198
|
807 |
|
wenzelm@8358
|
808 |
* isatool mkdir provides easy setup of Isabelle session directories,
|
wenzelm@8518
|
809 |
including proper document sources;
|
wenzelm@8358
|
810 |
|
wenzelm@8358
|
811 |
* generated LaTeX sources are now deleted after successful run
|
wenzelm@8358
|
812 |
(isatool document -c); may retain a copy somewhere else via -D option
|
wenzelm@8358
|
813 |
of isatool usedir;
|
wenzelm@8358
|
814 |
|
wenzelm@8566
|
815 |
* isatool usedir -D now lets isatool latex -o sty update the Isabelle
|
wenzelm@10003
|
816 |
style files, achieving self-contained LaTeX sources and simplifying
|
wenzelm@10003
|
817 |
LaTeX debugging;
|
wenzelm@8566
|
818 |
|
wenzelm@8518
|
819 |
* old-style theories now produce (crude) LaTeX output as well;
|
wenzelm@8358
|
820 |
|
wenzelm@9057
|
821 |
* browser info session directories are now self-contained (may be put
|
wenzelm@9437
|
822 |
on WWW server seperately); improved graphs of nested sessions; removed
|
wenzelm@9437
|
823 |
graph for 'all sessions';
|
wenzelm@9057
|
824 |
|
wenzelm@10003
|
825 |
* several improvements in isabelle style files; \isabellestyle{it}
|
wenzelm@10003
|
826 |
produces fake math mode output; \isamarkupheader is now \section by
|
wenzelm@10003
|
827 |
default; see lib/texinputs/isabelle.sty etc.;
|
wenzelm@9489
|
828 |
|
wenzelm@8358
|
829 |
|
wenzelm@8184
|
830 |
*** Isar ***
|
wenzelm@8184
|
831 |
|
wenzelm@10003
|
832 |
* Isar/Pure: local results and corresponding term bindings are now
|
wenzelm@10003
|
833 |
subject to Hindley-Milner polymorphism (similar to ML); this
|
wenzelm@10003
|
834 |
accommodates incremental type-inference very nicely;
|
wenzelm@8283
|
835 |
|
wenzelm@10003
|
836 |
* Isar/Pure: new derived language element 'obtain' supports
|
wenzelm@10003
|
837 |
generalized existence reasoning;
|
wenzelm@8621
|
838 |
|
wenzelm@10003
|
839 |
* Isar/Pure: new calculational elements 'moreover' and 'ultimately'
|
wenzelm@10003
|
840 |
support accumulation of results, without applying any rules yet;
|
wenzelm@10003
|
841 |
useful to collect intermediate results without explicit name
|
wenzelm@10003
|
842 |
references, and for use with transitivity rules with more than 2
|
wenzelm@10003
|
843 |
premises;
|
wenzelm@8184
|
844 |
|
wenzelm@10003
|
845 |
* Isar/Pure: scalable support for case-analysis type proofs: new
|
wenzelm@10003
|
846 |
'case' language element refers to local contexts symbolically, as
|
wenzelm@10003
|
847 |
produced by certain proof methods; internally, case names are attached
|
wenzelm@10003
|
848 |
to theorems as "tags";
|
wenzelm@8440
|
849 |
|
wenzelm@10003
|
850 |
* Isar/Pure: theory command 'hide' removes declarations from
|
wenzelm@9330
|
851 |
class/type/const name spaces;
|
wenzelm@9330
|
852 |
|
wenzelm@10003
|
853 |
* Isar/Pure: theory command 'defs' supports option "(overloaded)" to
|
wenzelm@9330
|
854 |
indicate potential overloading;
|
wenzelm@9330
|
855 |
|
wenzelm@10003
|
856 |
* Isar/Pure: changed syntax of local blocks from {{ }} to { };
|
wenzelm@8921
|
857 |
|
wenzelm@10003
|
858 |
* Isar/Pure: syntax of sorts made 'inner', i.e. have to write
|
wenzelm@10003
|
859 |
"{a,b,c}" instead of {a,b,c};
|
wenzelm@9612
|
860 |
|
wenzelm@10003
|
861 |
* Isar/Pure now provides its own version of intro/elim/dest
|
wenzelm@10003
|
862 |
attributes; useful for building new logics, but beware of confusion
|
wenzelm@10003
|
863 |
with the version in Provers/classical;
|
wenzelm@8921
|
864 |
|
wenzelm@10003
|
865 |
* Isar/Pure: the local context of (non-atomic) goals is provided via
|
wenzelm@10003
|
866 |
case name 'antecedent';
|
wenzelm@8621
|
867 |
|
wenzelm@10003
|
868 |
* Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms
|
wenzelm@10003
|
869 |
to the current context is now done automatically);
|
wenzelm@8991
|
870 |
|
wenzelm@10003
|
871 |
* Isar/Pure: theory command 'method_setup' provides a simple interface
|
wenzelm@10003
|
872 |
for definining proof methods in ML;
|
wenzelm@9011
|
873 |
|
wenzelm@10003
|
874 |
* Isar/Provers: intro/elim/dest attributes changed; renamed
|
wenzelm@9941
|
875 |
intro/intro!/intro!! flags to intro!/intro/intro? (INCOMPATIBILITY, in
|
wenzelm@9941
|
876 |
most cases, one should have to change intro!! to intro? only);
|
wenzelm@9941
|
877 |
replaced "delrule" by "rule del";
|
wenzelm@8283
|
878 |
|
wenzelm@10003
|
879 |
* Isar/Provers: new 'hypsubst' method, plain 'subst' method and
|
wenzelm@10003
|
880 |
'symmetric' attribute (the latter supercedes [RS sym]);
|
wenzelm@9612
|
881 |
|
wenzelm@10003
|
882 |
* Isar/Provers: splitter support (via 'split' attribute and 'simp'
|
wenzelm@10003
|
883 |
method modifier); 'simp' method: 'only:' modifier removes loopers as
|
wenzelm@10003
|
884 |
well (including splits);
|
wenzelm@10003
|
885 |
|
wenzelm@10003
|
886 |
* Isar/Provers: Simplifier and Classical methods now support all kind
|
wenzelm@10003
|
887 |
of modifiers used in the past, including 'cong', 'iff', etc.
|
wenzelm@10003
|
888 |
|
wenzelm@10003
|
889 |
* Isar/Provers: added 'fastsimp' and 'clarsimp' methods (combination
|
wenzelm@10003
|
890 |
of Simplifier and Classical reasoner);
|
wenzelm@10003
|
891 |
|
wenzelm@10003
|
892 |
* Isar/HOL: new proof method 'cases' and improved version of 'induct'
|
wenzelm@10003
|
893 |
now support named cases; major packages (inductive, datatype, primrec,
|
wenzelm@10003
|
894 |
recdef) support case names and properly name parameters;
|
wenzelm@10003
|
895 |
|
wenzelm@10003
|
896 |
* Isar/HOL: new transitivity rules for substitution in inequalities --
|
wenzelm@10003
|
897 |
monotonicity conditions are extracted to be proven at end of
|
wenzelm@10003
|
898 |
calculations;
|
wenzelm@10003
|
899 |
|
wenzelm@10003
|
900 |
* Isar/HOL: removed 'case_split' thm binding, should use 'cases' proof
|
wenzelm@10003
|
901 |
method anyway;
|
wenzelm@10003
|
902 |
|
wenzelm@10003
|
903 |
* Isar/HOL: removed old expand_if = split_if; theorems if_splits =
|
wenzelm@10003
|
904 |
split_if split_if_asm; datatype package provides theorems foo.splits =
|
wenzelm@10003
|
905 |
foo.split foo.split_asm for each datatype;
|
wenzelm@10003
|
906 |
|
wenzelm@10003
|
907 |
* Isar/HOL: tuned inductive package, rename "intrs" to "intros"
|
wenzelm@10003
|
908 |
(potential INCOMPATIBILITY), emulation of mk_cases feature for proof
|
wenzelm@10003
|
909 |
scripts: new 'inductive_cases' command and 'ind_cases' method; (Note:
|
wenzelm@10003
|
910 |
use "(cases (simplified))" method in proper proof texts);
|
wenzelm@10003
|
911 |
|
wenzelm@10003
|
912 |
* Isar/HOL: added global 'arith_split' attribute for 'arith' method;
|
wenzelm@10003
|
913 |
|
wenzelm@10003
|
914 |
* Isar: names of theorems etc. may be natural numbers as well;
|
wenzelm@10003
|
915 |
|
wenzelm@10003
|
916 |
* Isar: 'pr' command: optional arguments for goals_limit and
|
wenzelm@9724
|
917 |
ProofContext.prems_limit; no longer prints theory contexts, but only
|
wenzelm@9724
|
918 |
proof states;
|
wenzelm@8487
|
919 |
|
wenzelm@10003
|
920 |
* Isar: diagnostic commands 'pr', 'thm', 'prop', 'term', 'typ' admit
|
wenzelm@8518
|
921 |
additional print modes to be specified; e.g. "pr(latex)" will print
|
wenzelm@8518
|
922 |
proof state according to the Isabelle LaTeX style;
|
wenzelm@8487
|
923 |
|
wenzelm@10003
|
924 |
* Isar: improved support for emulating tactic scripts, including proof
|
wenzelm@9612
|
925 |
methods 'rule_tac' etc., 'cut_tac', 'thin_tac', 'subgoal_tac',
|
wenzelm@9612
|
926 |
'rename_tac', 'rotate_tac', 'tactic', and 'case_tac' / 'induct_tac'
|
wenzelm@9612
|
927 |
(for HOL datatypes);
|
wenzelm@8534
|
928 |
|
wenzelm@10003
|
929 |
* Isar: simplified (more robust) goal selection of proof methods: 1st
|
wenzelm@10003
|
930 |
goal, all goals, or explicit goal specifier (tactic emulation); thus
|
wenzelm@10003
|
931 |
'proof method scripts' have to be in depth-first order;
|
wenzelm@8673
|
932 |
|
wenzelm@10003
|
933 |
* Isar: tuned 'let' syntax: replaced 'as' keyword by 'and';
|
wenzelm@8729
|
934 |
|
wenzelm@10003
|
935 |
* Isar: removed 'help' command, which hasn't been too helpful anyway;
|
wenzelm@10003
|
936 |
should instead use individual commands for printing items
|
wenzelm@10003
|
937 |
(print_commands, print_methods etc.);
|
wenzelm@9224
|
938 |
|
wenzelm@10003
|
939 |
* Isar: added 'nothing' --- the empty list of theorems;
|
wenzelm@9239
|
940 |
|
wenzelm@8184
|
941 |
|
paulson@8014
|
942 |
*** HOL ***
|
paulson@8014
|
943 |
|
wenzelm@10080
|
944 |
* HOL/MicroJava: formalization of a fragment of Java, together with a
|
wenzelm@10080
|
945 |
corresponding virtual machine and a specification of its bytecode
|
wenzelm@10080
|
946 |
verifier and a lightweight bytecode verifier, including proofs of
|
wenzelm@10080
|
947 |
type-safety; by Gerwin Klein, Tobias Nipkow, David von Oheimb, and
|
wenzelm@10080
|
948 |
Cornelia Pusch (see also the homepage of project Bali at
|
wenzelm@10080
|
949 |
http://isabelle.in.tum.de/Bali/);
|
wenzelm@10080
|
950 |
|
wenzelm@8518
|
951 |
* HOL/Algebra: new theory of rings and univariate polynomials, by
|
wenzelm@8518
|
952 |
Clemens Ballarin;
|
paulson@8014
|
953 |
|
wenzelm@10157
|
954 |
* HOL/NumberTheory: fundamental Theorem of Arithmetic, Chinese
|
wenzelm@10003
|
955 |
Remainder Theorem, Fermat/Euler Theorem, Wilson's Theorem, by Thomas M
|
wenzelm@10003
|
956 |
Rasmussen;
|
wenzelm@8007
|
957 |
|
wenzelm@10157
|
958 |
* HOL/Lattice: fundamental concepts of lattice theory and order
|
wenzelm@10157
|
959 |
structures, including duals, properties of bounds versus algebraic
|
wenzelm@10157
|
960 |
laws, lattice operations versus set-theoretic ones, the Knaster-Tarski
|
wenzelm@10157
|
961 |
Theorem for complete lattices etc.; may also serve as a demonstration
|
wenzelm@10157
|
962 |
for abstract algebraic reasoning using axiomatic type classes, and
|
wenzelm@10157
|
963 |
mathematics-style proof in Isabelle/Isar; by Markus Wenzel;
|
wenzelm@10157
|
964 |
|
wenzelm@10003
|
965 |
* HOL/Prolog: a (bare-bones) implementation of Lambda-Prolog, by David
|
wenzelm@10003
|
966 |
von Oheimb;
|
wenzelm@8570
|
967 |
|
wenzelm@10164
|
968 |
* HOL/IMPP: extension of IMP with local variables and mutually
|
wenzelm@10164
|
969 |
recursive procedures, by David von Oheimb;
|
wenzelm@10164
|
970 |
|
wenzelm@10003
|
971 |
* HOL/Lambda: converted into new-style theory and document;
|
paulson@9542
|
972 |
|
wenzelm@10003
|
973 |
* HOL/ex/Multiquote: example of multiple nested quotations and
|
wenzelm@10003
|
974 |
anti-quotations -- basically a generalized version of de-Bruijn
|
wenzelm@10003
|
975 |
representation; very useful in avoiding lifting of operations;
|
wenzelm@8848
|
976 |
|
wenzelm@9612
|
977 |
* HOL/record: added general record equality rule to simpset; fixed
|
wenzelm@9612
|
978 |
select-update simplification procedure to handle extended records as
|
wenzelm@9612
|
979 |
well; admit "r" as field name;
|
paulson@9542
|
980 |
|
paulson@8967
|
981 |
* HOL: 0 is now overloaded over the new sort "zero", allowing its use with
|
paulson@8967
|
982 |
other numeric types and also as the identity of groups, rings, etc.;
|
paulson@8967
|
983 |
|
paulson@8967
|
984 |
* HOL: new axclass plus_ac0 for addition with the AC-laws and 0 as identity.
|
paulson@8967
|
985 |
Types nat and int belong to this axclass;
|
paulson@8967
|
986 |
|
wenzelm@10003
|
987 |
* HOL: greatly improved simplification involving numerals of type nat, int, real:
|
paulson@8788
|
988 |
(i + #8 + j) = Suc k simplifies to #7 + (i + j) = k
|
paulson@8832
|
989 |
i*j + k + j*#3*i simplifies to #4*(i*j) + k
|
paulson@8832
|
990 |
two terms #m*u and #n*u are replaced by #(m+n)*u
|
paulson@8832
|
991 |
(where #m, #n and u can implicitly be 1; this is simproc combine_numerals)
|
paulson@8832
|
992 |
and the term/formula #m*u+x ~~ #n*u+y simplifies simplifies to #(m-n)+x ~~ y
|
paulson@8832
|
993 |
or x ~~ #(n-m)+y, where ~~ is one of = < <= or - (simproc cancel_numerals);
|
paulson@8736
|
994 |
|
wenzelm@10003
|
995 |
* HOL: meson_tac is available (previously in ex/meson.ML); it is a
|
wenzelm@10003
|
996 |
powerful prover for predicate logic but knows nothing of clasets; see
|
wenzelm@10003
|
997 |
ex/mesontest.ML and ex/mesontest2.ML for example applications;
|
paulson@9835
|
998 |
|
wenzelm@8848
|
999 |
* HOL: new version of "case_tac" subsumes both boolean case split and
|
wenzelm@8440
|
1000 |
"exhaust_tac" on datatypes; INCOMPATIBILITY: exhaust_tac no longer
|
wenzelm@8518
|
1001 |
exists, may define val exhaust_tac = case_tac for ad-hoc portability;
|
wenzelm@8440
|
1002 |
|
wenzelm@8848
|
1003 |
* HOL: simplification no longer dives into case-expressions: only the
|
wenzelm@10129
|
1004 |
selector expression is simplified, but not the remaining arms; to
|
wenzelm@10129
|
1005 |
enable full simplification of case-expressions for datatype t, you may
|
wenzelm@10129
|
1006 |
remove t.weak_case_cong from the simpset, either globally (Delcongs
|
wenzelm@10129
|
1007 |
[thm"t.weak_case_cong"];) or locally (delcongs [...]).
|
nipkow@8603
|
1008 |
|
wenzelm@8848
|
1009 |
* HOL/recdef: the recursion equations generated by 'recdef' for
|
wenzelm@8848
|
1010 |
function 'f' are now called f.simps instead of f.rules; if all
|
wenzelm@8848
|
1011 |
termination conditions are proved automatically, these simplification
|
wenzelm@8848
|
1012 |
rules are added to the simpset, as in primrec; rules may be named
|
wenzelm@8848
|
1013 |
individually as well, resulting in a separate list of theorems for
|
wenzelm@8848
|
1014 |
each equation;
|
wenzelm@8848
|
1015 |
|
wenzelm@9489
|
1016 |
* HOL/While is a new theory that provides a while-combinator. It
|
wenzelm@9489
|
1017 |
permits the definition of tail-recursive functions without the
|
wenzelm@9489
|
1018 |
provision of a termination measure. The latter is necessary once the
|
wenzelm@9489
|
1019 |
invariant proof rule for while is applied.
|
nipkow@9457
|
1020 |
|
wenzelm@10003
|
1021 |
* HOL: new (overloaded) notation for the set of elements below/above
|
wenzelm@10003
|
1022 |
some element: {..u}, {..u(}, {l..}, {)l..}. See theory SetInterval.
|
nipkow@8925
|
1023 |
|
wenzelm@8848
|
1024 |
* HOL: theorems impI, allI, ballI bound as "strip";
|
wenzelm@8848
|
1025 |
|
wenzelm@10003
|
1026 |
* HOL: new tactic induct_thm_tac: thm -> string -> int -> tactic
|
nipkow@9746
|
1027 |
induct_tac th "x1 ... xn" expects th to have a conclusion of the form
|
nipkow@9746
|
1028 |
P v1 ... vn and abbreviates res_inst_tac [("v1","x1"),...,("vn","xn")] th;
|
nipkow@9746
|
1029 |
|
wenzelm@10003
|
1030 |
* HOL/Real: "rabs" replaced by overloaded "abs" function;
|
nipkow@9737
|
1031 |
|
wenzelm@10003
|
1032 |
* HOL: theory Sexp now in HOL/Induct examples (it used to be part of
|
wenzelm@10003
|
1033 |
main HOL, but was unused);
|
nipkow@8626
|
1034 |
|
wenzelm@10003
|
1035 |
* HOL: fewer consts declared as global (e.g. have to refer to
|
wenzelm@10003
|
1036 |
"Lfp.lfp" instead of "lfp" internally; affects ML packages only);
|
wenzelm@8887
|
1037 |
|
wenzelm@10003
|
1038 |
* HOL: tuned AST representation of nested pairs, avoiding bogus output
|
wenzelm@10003
|
1039 |
in case of overlap with user translations (e.g. judgements over
|
wenzelm@10003
|
1040 |
tuples); (note that the underlying logical represenation is still
|
wenzelm@10003
|
1041 |
bogus);
|
wenzelm@9349
|
1042 |
|
nipkow@8412
|
1043 |
|
paulson@9542
|
1044 |
*** ZF ***
|
paulson@9542
|
1045 |
|
wenzelm@10003
|
1046 |
* ZF: simplification automatically cancels common terms in arithmetic
|
wenzelm@10003
|
1047 |
expressions over nat and int;
|
paulson@9542
|
1048 |
|
wenzelm@10003
|
1049 |
* ZF: new treatment of nat to minimize type-checking: all operators
|
wenzelm@10003
|
1050 |
coerce their operands to a natural number using the function natify,
|
wenzelm@10003
|
1051 |
making the algebraic laws unconditional;
|
paulson@9542
|
1052 |
|
wenzelm@10003
|
1053 |
* ZF: as above, for int: operators coerce their operands to an integer
|
wenzelm@10003
|
1054 |
using the function intify;
|
paulson@9542
|
1055 |
|
wenzelm@10003
|
1056 |
* ZF: the integer library now contains many of the usual laws for the
|
wenzelm@10003
|
1057 |
orderings, including $<=, and monotonicity laws for $+ and $*;
|
paulson@9542
|
1058 |
|
wenzelm@10003
|
1059 |
* ZF: new example ZF/ex/NatSum to demonstrate integer arithmetic
|
wenzelm@10003
|
1060 |
simplification;
|
paulson@9542
|
1061 |
|
wenzelm@10003
|
1062 |
* FOL and ZF: AddIffs now available, giving theorems of the form P<->Q
|
wenzelm@10003
|
1063 |
to the simplifier and classical reasoner simultaneously;
|
paulson@9388
|
1064 |
|
paulson@9388
|
1065 |
|
wenzelm@8358
|
1066 |
*** General ***
|
wenzelm@8358
|
1067 |
|
wenzelm@10003
|
1068 |
* Provers: blast_tac now handles actual object-logic rules as
|
wenzelm@10003
|
1069 |
assumptions; note that auto_tac uses blast_tac internally as well;
|
wenzelm@10003
|
1070 |
|
wenzelm@10003
|
1071 |
* Provers: new functions rulify/rulify_no_asm: thm -> thm for turning
|
wenzelm@10003
|
1072 |
outer -->/All/Ball into ==>/!!; qed_spec_mp now uses rulify_no_asm;
|
wenzelm@10003
|
1073 |
|
wenzelm@9941
|
1074 |
* Provers: delrules now handles destruct rules as well (no longer need
|
wenzelm@9941
|
1075 |
explicit make_elim);
|
wenzelm@9941
|
1076 |
|
wenzelm@10003
|
1077 |
* Provers: Blast_tac now warns of and ignores "weak elimination rules" e.g.
|
wenzelm@10003
|
1078 |
[| inj ?f; ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
|
wenzelm@10003
|
1079 |
use instead the strong form,
|
wenzelm@10003
|
1080 |
[| inj ?f; ~ ?W ==> ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
|
wenzelm@10003
|
1081 |
in HOL, FOL and ZF the function cla_make_elim will create such rules
|
wenzelm@10003
|
1082 |
from destruct-rules;
|
wenzelm@9489
|
1083 |
|
wenzelm@9709
|
1084 |
* Provers: Simplifier.easy_setup provides a fast path to basic
|
wenzelm@9709
|
1085 |
Simplifier setup for new object-logics;
|
wenzelm@9349
|
1086 |
|
wenzelm@9709
|
1087 |
* Pure: AST translation rules no longer require constant head on LHS;
|
wenzelm@8729
|
1088 |
|
wenzelm@9709
|
1089 |
* Pure: improved name spaces: ambiguous output is qualified; support
|
wenzelm@9709
|
1090 |
for hiding of names;
|
wenzelm@8358
|
1091 |
|
wenzelm@10003
|
1092 |
* system: smart setup of canonical ML_HOME, ISABELLE_INTERFACE, and
|
wenzelm@10003
|
1093 |
XSYMBOL_HOME; no longer need to do manual configuration in most
|
wenzelm@10003
|
1094 |
situations;
|
wenzelm@10003
|
1095 |
|
wenzelm@9709
|
1096 |
* system: compression of ML heaps images may now be controlled via -c
|
wenzelm@9709
|
1097 |
option of isabelle and isatool usedir (currently only observed by
|
wenzelm@9709
|
1098 |
Poly/ML);
|
wenzelm@9709
|
1099 |
|
wenzelm@9981
|
1100 |
* system: isatool installfonts may handle X-Symbol fonts as well (very
|
wenzelm@9981
|
1101 |
useful for remote X11);
|
wenzelm@9981
|
1102 |
|
wenzelm@9709
|
1103 |
* system: provide TAGS file for Isabelle sources;
|
wenzelm@9052
|
1104 |
|
wenzelm@9288
|
1105 |
* ML: infix 'OF' is a version of 'MRS' with more appropriate argument
|
wenzelm@9288
|
1106 |
order;
|
wenzelm@9288
|
1107 |
|
wenzelm@8994
|
1108 |
* ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
|
wenzelm@8994
|
1109 |
timing flag supersedes proof_timing and Toplevel.trace;
|
wenzelm@8994
|
1110 |
|
wenzelm@10003
|
1111 |
* ML: new combinators |>> and |>>> for incremental transformations
|
wenzelm@10003
|
1112 |
with secondary results (e.g. certain theory extensions):
|
wenzelm@10003
|
1113 |
|
wenzelm@9330
|
1114 |
* ML: PureThy.add_defs gets additional argument to indicate potential
|
wenzelm@9330
|
1115 |
overloading (usually false);
|
wenzelm@9330
|
1116 |
|
wenzelm@10003
|
1117 |
* ML: PureThy.add_thms/add_axioms/add_defs now return theorems as
|
wenzelm@10003
|
1118 |
results;
|
wenzelm@8440
|
1119 |
|
wenzelm@8358
|
1120 |
|
wenzelm@8015
|
1121 |
|
wenzelm@7986
|
1122 |
New in Isabelle99 (October 1999)
|
wenzelm@7986
|
1123 |
--------------------------------
|
oheimb@4649
|
1124 |
|
paulson@5931
|
1125 |
*** Overview of INCOMPATIBILITIES (see below for more details) ***
|
paulson@5931
|
1126 |
|
paulson@6922
|
1127 |
* HOL: The THEN and ELSE parts of conditional expressions (if P then x else y)
|
paulson@6922
|
1128 |
are no longer simplified. (This allows the simplifier to unfold recursive
|
paulson@6922
|
1129 |
functional programs.) To restore the old behaviour, declare
|
wenzelm@7215
|
1130 |
|
wenzelm@7215
|
1131 |
Delcongs [if_weak_cong];
|
paulson@6922
|
1132 |
|
wenzelm@6269
|
1133 |
* HOL: Removed the obsolete syntax "Compl A"; use -A for set
|
wenzelm@6269
|
1134 |
complement;
|
paulson@5931
|
1135 |
|
wenzelm@6269
|
1136 |
* HOL: the predicate "inj" is now defined by translation to "inj_on";
|
paulson@6174
|
1137 |
|
berghofe@7847
|
1138 |
* HOL/datatype: mutual_induct_tac no longer exists --
|
berghofe@7847
|
1139 |
use induct_tac "x_1 ... x_n" instead of mutual_induct_tac ["x_1", ..., "x_n"]
|
berghofe@7847
|
1140 |
|
wenzelm@6386
|
1141 |
* HOL/typedef: fixed type inference for representing set; type
|
wenzelm@6386
|
1142 |
arguments now have to occur explicitly on the rhs as type constraints;
|
wenzelm@6386
|
1143 |
|
wenzelm@6269
|
1144 |
* ZF: The con_defs part of an inductive definition may no longer refer
|
wenzelm@6269
|
1145 |
to constants declared in the same theory;
|
nipkow@6057
|
1146 |
|
wenzelm@6269
|
1147 |
* HOL, ZF: the function mk_cases, generated by the inductive
|
wenzelm@6269
|
1148 |
definition package, has lost an argument. To simplify its result, it
|
wenzelm@6269
|
1149 |
uses the default simpset instead of a supplied list of theorems.
|
paulson@6141
|
1150 |
|
wenzelm@7215
|
1151 |
* HOL/List: the constructors of type list are now Nil and Cons;
|
wenzelm@7215
|
1152 |
|
nipkow@7619
|
1153 |
* Simplifier: the type of the infix ML functions
|
wenzelm@8729
|
1154 |
setSSolver addSSolver setSolver addSolver
|
nipkow@7619
|
1155 |
is now simpset * solver -> simpset where `solver' is a new abstract type
|
nipkow@7619
|
1156 |
for packaging solvers. A solver is created via
|
wenzelm@8729
|
1157 |
mk_solver: string -> (thm list -> int -> tactic) -> solver
|
nipkow@7619
|
1158 |
where the string argument is only a comment.
|
nipkow@6057
|
1159 |
|
wenzelm@7647
|
1160 |
|
paulson@6069
|
1161 |
*** Proof tools ***
|
paulson@6069
|
1162 |
|
wenzelm@6343
|
1163 |
* Provers/Arith/fast_lin_arith.ML contains a functor for creating a
|
wenzelm@6343
|
1164 |
decision procedure for linear arithmetic. Currently it is used for
|
wenzelm@7593
|
1165 |
types `nat', `int', and `real' in HOL (see below); it can, should and
|
wenzelm@7593
|
1166 |
will be instantiated for other types and logics as well.
|
paulson@6069
|
1167 |
|
nipkow@7324
|
1168 |
* The simplifier now accepts rewrite rules with flexible heads, eg
|
nipkow@7324
|
1169 |
hom ?f ==> ?f(?x+?y) = ?f ?x + ?f ?y
|
nipkow@7324
|
1170 |
They are applied like any rule with a non-pattern lhs, i.e. by first-order
|
nipkow@7324
|
1171 |
matching.
|
paulson@6069
|
1172 |
|
wenzelm@7593
|
1173 |
|
paulson@6014
|
1174 |
*** General ***
|
paulson@6014
|
1175 |
|
wenzelm@7986
|
1176 |
* New Isabelle/Isar subsystem provides an alternative to traditional
|
wenzelm@7215
|
1177 |
tactical theorem proving; together with the ProofGeneral/isar user
|
wenzelm@7215
|
1178 |
interface it offers an interactive environment for developing human
|
wenzelm@7215
|
1179 |
readable proof documents (Isar == Intelligible semi-automated
|
wenzelm@7886
|
1180 |
reasoning); for further information see isatool doc isar-ref,
|
wenzelm@7986
|
1181 |
src/HOL/Isar_examples and http://isabelle.in.tum.de/Isar/
|
wenzelm@7886
|
1182 |
|
wenzelm@9612
|
1183 |
* improved and simplified presentation of theories: better HTML markup
|
wenzelm@9612
|
1184 |
(including colors), graph views in several sizes; isatool usedir now
|
wenzelm@9612
|
1185 |
provides a proper interface for user theories (via -P option); actual
|
wenzelm@9612
|
1186 |
document preparation based on (PDF)LaTeX is available as well (for
|
wenzelm@9612
|
1187 |
new-style theories only); see isatool doc system for more information;
|
wenzelm@7215
|
1188 |
|
wenzelm@7252
|
1189 |
* native support for Proof General, both for classic Isabelle and
|
wenzelm@7986
|
1190 |
Isabelle/Isar;
|
wenzelm@7215
|
1191 |
|
wenzelm@7791
|
1192 |
* ML function thm_deps visualizes dependencies of theorems and lemmas,
|
wenzelm@7791
|
1193 |
using the graph browser tool;
|
wenzelm@7791
|
1194 |
|
wenzelm@6751
|
1195 |
* Isabelle manuals now also available as PDF;
|
wenzelm@6751
|
1196 |
|
wenzelm@6449
|
1197 |
* theory loader rewritten from scratch (may not be fully
|
wenzelm@6449
|
1198 |
bug-compatible); old loadpath variable has been replaced by show_path,
|
wenzelm@6671
|
1199 |
add_path, del_path, reset_path functions; new operations such as
|
wenzelm@7593
|
1200 |
update_thy, touch_thy, remove_thy, use/update_thy_only (see also
|
wenzelm@7593
|
1201 |
isatool doc ref);
|
wenzelm@6449
|
1202 |
|
wenzelm@7215
|
1203 |
* improved isatool install: option -k creates KDE application icon,
|
wenzelm@7215
|
1204 |
option -p DIR installs standalone binaries;
|
wenzelm@7215
|
1205 |
|
wenzelm@7215
|
1206 |
* added ML_PLATFORM setting (useful for cross-platform installations);
|
wenzelm@7215
|
1207 |
more robust handling of platform specific ML images for SML/NJ;
|
wenzelm@7215
|
1208 |
|
wenzelm@7886
|
1209 |
* the settings environment is now statically scoped, i.e. it is never
|
wenzelm@7986
|
1210 |
created again in sub-processes invoked from isabelle, isatool, or
|
wenzelm@7886
|
1211 |
Isabelle;
|
wenzelm@7886
|
1212 |
|
wenzelm@7215
|
1213 |
* path element specification '~~' refers to '$ISABELLE_HOME';
|
wenzelm@7215
|
1214 |
|
wenzelm@6343
|
1215 |
* in locales, the "assumes" and "defines" parts may be omitted if
|
wenzelm@6343
|
1216 |
empty;
|
wenzelm@5973
|
1217 |
|
wenzelm@6269
|
1218 |
* new print_mode "xsymbols" for extended symbol support (e.g. genuine
|
wenzelm@6269
|
1219 |
long arrows);
|
wenzelm@6259
|
1220 |
|
wenzelm@6343
|
1221 |
* new print_mode "HTML";
|
wenzelm@6343
|
1222 |
|
wenzelm@6343
|
1223 |
* new flag show_tags controls display of tags of theorems (which are
|
wenzelm@6343
|
1224 |
basically just comments that may be attached by some tools);
|
wenzelm@6343
|
1225 |
|
wenzelm@6461
|
1226 |
* Isamode 2.6 requires patch to accomodate change of Isabelle font
|
wenzelm@6461
|
1227 |
mode and goal output format:
|
wenzelm@6461
|
1228 |
|
wenzelm@6461
|
1229 |
diff -r Isamode-2.6/elisp/isa-load.el Isamode/elisp/isa-load.el
|
wenzelm@6461
|
1230 |
244c244
|
wenzelm@6461
|
1231 |
< (list (isa-getenv "ISABELLE") "-msymbols" logic-name)
|
wenzelm@6461
|
1232 |
---
|
wenzelm@6533
|
1233 |
> (list (isa-getenv "ISABELLE") "-misabelle_font" "-msymbols" logic-name)
|
wenzelm@6461
|
1234 |
diff -r Isabelle-2.6/elisp/isa-proofstate.el Isamode/elisp/isa-proofstate.el
|
wenzelm@6461
|
1235 |
181c181
|
wenzelm@6461
|
1236 |
< (defconst proofstate-proofstart-regexp "^Level [0-9]+$"
|
wenzelm@6461
|
1237 |
---
|
wenzelm@6461
|
1238 |
> (defconst proofstate-proofstart-regexp "^Level [0-9]+"
|
wenzelm@6461
|
1239 |
|
wenzelm@7450
|
1240 |
* function bind_thms stores lists of theorems (cf. bind_thm);
|
wenzelm@7450
|
1241 |
|
wenzelm@7593
|
1242 |
* new shorthand tactics ftac, eatac, datac, fatac;
|
wenzelm@7593
|
1243 |
|
wenzelm@7593
|
1244 |
* qed (and friends) now accept "" as result name; in that case the
|
wenzelm@7986
|
1245 |
theorem is not stored, but proper checks and presentation of the
|
wenzelm@7986
|
1246 |
result still apply;
|
wenzelm@7593
|
1247 |
|
wenzelm@7805
|
1248 |
* theorem database now also indexes constants "Trueprop", "all",
|
wenzelm@7805
|
1249 |
"==>", "=="; thus thms_containing, findI etc. may retrieve more rules;
|
wenzelm@7805
|
1250 |
|
oheimb@6028
|
1251 |
|
nipkow@6057
|
1252 |
*** HOL ***
|
nipkow@6057
|
1253 |
|
wenzelm@7215
|
1254 |
** HOL arithmetic **
|
wenzelm@7215
|
1255 |
|
wenzelm@6343
|
1256 |
* There are now decision procedures for linear arithmetic over nat and
|
wenzelm@6343
|
1257 |
int:
|
nipkow@6131
|
1258 |
|
wenzelm@6343
|
1259 |
1. arith_tac copes with arbitrary formulae involving `=', `<', `<=',
|
wenzelm@6343
|
1260 |
`+', `-', `Suc', `min', `max' and numerical constants; other subterms
|
wenzelm@6343
|
1261 |
are treated as atomic; subformulae not involving type `nat' or `int'
|
wenzelm@6343
|
1262 |
are ignored; quantified subformulae are ignored unless they are
|
wenzelm@6343
|
1263 |
positive universal or negative existential. The tactic has to be
|
wenzelm@6343
|
1264 |
invoked by hand and can be a little bit slow. In particular, the
|
wenzelm@6343
|
1265 |
running time is exponential in the number of occurrences of `min' and
|
wenzelm@6343
|
1266 |
`max', and `-' on `nat'.
|
nipkow@6131
|
1267 |
|
wenzelm@6343
|
1268 |
2. fast_arith_tac is a cut-down version of arith_tac: it only takes
|
wenzelm@6343
|
1269 |
(negated) (in)equalities among the premises and the conclusion into
|
wenzelm@6343
|
1270 |
account (i.e. no compound formulae) and does not know about `min' and
|
wenzelm@6343
|
1271 |
`max', and `-' on `nat'. It is fast and is used automatically by the
|
wenzelm@6343
|
1272 |
simplifier.
|
nipkow@6131
|
1273 |
|
wenzelm@6343
|
1274 |
NB: At the moment, these decision procedures do not cope with mixed
|
wenzelm@6343
|
1275 |
nat/int formulae where the two parts interact, such as `m < n ==>
|
wenzelm@6343
|
1276 |
int(m) < int(n)'.
|
oheimb@6028
|
1277 |
|
wenzelm@7215
|
1278 |
* HOL/Numeral provides a generic theory of numerals (encoded
|
wenzelm@7313
|
1279 |
efficiently as bit strings); setup for types nat/int/real is in place;
|
wenzelm@7215
|
1280 |
INCOMPATIBILITY: since numeral syntax is now polymorphic, rather than
|
wenzelm@7215
|
1281 |
int, existing theories and proof scripts may require a few additional
|
wenzelm@7215
|
1282 |
type constraints;
|
paulson@7157
|
1283 |
|
wenzelm@7215
|
1284 |
* integer division and remainder can now be performed on constant
|
wenzelm@7215
|
1285 |
arguments;
|
paulson@6922
|
1286 |
|
wenzelm@7215
|
1287 |
* many properties of integer multiplication, division and remainder
|
wenzelm@7215
|
1288 |
are now available;
|
wenzelm@7215
|
1289 |
|
paulson@7287
|
1290 |
* An interface to the Stanford Validity Checker (SVC) is available through the
|
paulson@7287
|
1291 |
tactic svc_tac. Propositional tautologies and theorems of linear arithmetic
|
paulson@7287
|
1292 |
are proved automatically. SVC must be installed separately, and its results
|
paulson@7287
|
1293 |
must be TAKEN ON TRUST (Isabelle does not check the proofs, but tags any
|
paulson@7287
|
1294 |
invocation of the underlying oracle). For SVC see
|
paulson@7444
|
1295 |
http://verify.stanford.edu/SVC
|
paulson@6922
|
1296 |
|
wenzelm@7125
|
1297 |
* IsaMakefile: the HOL-Real target now builds an actual image;
|
wenzelm@7125
|
1298 |
|
wenzelm@7215
|
1299 |
|
wenzelm@7215
|
1300 |
** HOL misc **
|
wenzelm@7215
|
1301 |
|
wenzelm@7595
|
1302 |
* HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
|
wenzelm@7595
|
1303 |
(in Isabelle/Isar) -- by Gertrud Bauer;
|
wenzelm@7595
|
1304 |
|
wenzelm@7691
|
1305 |
* HOL/BCV: generic model of bytecode verification, i.e. data-flow
|
wenzelm@7691
|
1306 |
analysis for assembly languages with subtypes;
|
wenzelm@7691
|
1307 |
|
wenzelm@6278
|
1308 |
* HOL/TLA (Lamport's Temporal Logic of Actions): major reorganization
|
wenzelm@6278
|
1309 |
-- avoids syntactic ambiguities and treats state, transition, and
|
wenzelm@6278
|
1310 |
temporal levels more uniformly; introduces INCOMPATIBILITIES due to
|
wenzelm@6278
|
1311 |
changed syntax and (many) tactics;
|
wenzelm@6278
|
1312 |
|
wenzelm@7791
|
1313 |
* HOL/inductive: Now also handles more general introduction rules such
|
wenzelm@7791
|
1314 |
as "ALL y. (y, x) : r --> y : acc r ==> x : acc r"; monotonicity
|
wenzelm@7791
|
1315 |
theorems are now maintained within the theory (maintained via the
|
wenzelm@7791
|
1316 |
"mono" attribute);
|
berghofe@7780
|
1317 |
|
wenzelm@7238
|
1318 |
* HOL/datatype: Now also handles arbitrarily branching datatypes
|
wenzelm@7238
|
1319 |
(using function types) such as
|
wenzelm@7238
|
1320 |
|
wenzelm@7238
|
1321 |
datatype 'a tree = Atom 'a | Branch "nat => 'a tree"
|
berghofe@7047
|
1322 |
|
wenzelm@7326
|
1323 |
* HOL/record: record_simproc (part of the default simpset) takes care
|
wenzelm@7326
|
1324 |
of selectors applied to updated records; record_split_tac is no longer
|
wenzelm@7327
|
1325 |
part of the default claset; update_defs may now be removed from the
|
wenzelm@7327
|
1326 |
simpset in many cases; COMPATIBILITY: old behavior achieved by
|
wenzelm@7326
|
1327 |
|
wenzelm@7326
|
1328 |
claset_ref () := claset() addSWrapper record_split_wrapper;
|
wenzelm@7326
|
1329 |
Delsimprocs [record_simproc]
|
wenzelm@7326
|
1330 |
|
wenzelm@6386
|
1331 |
* HOL/typedef: fixed type inference for representing set; type
|
wenzelm@6386
|
1332 |
arguments now have to occur explicitly on the rhs as type constraints;
|
wenzelm@6386
|
1333 |
|
paulson@7287
|
1334 |
* HOL/recdef (TFL): 'congs' syntax now expects comma separated list of theorem
|
paulson@7287
|
1335 |
names rather than an ML expression;
|
paulson@7287
|
1336 |
|
paulson@7287
|
1337 |
* HOL/defer_recdef (TFL): like recdef but the well-founded relation can be
|
paulson@7287
|
1338 |
supplied later. Program schemes can be defined, such as
|
paulson@7287
|
1339 |
"While B C s = (if B s then While B C (C s) else s)"
|
paulson@7287
|
1340 |
where the well-founded relation can be chosen after B and C have been given.
|
wenzelm@6563
|
1341 |
|
wenzelm@7215
|
1342 |
* HOL/List: the constructors of type list are now Nil and Cons;
|
wenzelm@7215
|
1343 |
INCOMPATIBILITY: while [] and infix # syntax is still there, of
|
wenzelm@7215
|
1344 |
course, ML tools referring to List.list.op # etc. have to be adapted;
|
wenzelm@7215
|
1345 |
|
wenzelm@7238
|
1346 |
* HOL_quantifiers flag superseded by "HOL" print mode, which is
|
wenzelm@7238
|
1347 |
disabled by default; run isabelle with option -m HOL to get back to
|
wenzelm@7238
|
1348 |
the original Gordon/HOL-style output;
|
wenzelm@7238
|
1349 |
|
wenzelm@7238
|
1350 |
* HOL/Ord.thy: new bounded quantifier syntax (input only): ALL x<y. P,
|
wenzelm@7238
|
1351 |
ALL x<=y. P, EX x<y. P, EX x<=y. P;
|
wenzelm@7238
|
1352 |
|
wenzelm@7238
|
1353 |
* HOL basic syntax simplified (more orthogonal): all variants of
|
wenzelm@7238
|
1354 |
All/Ex now support plain / symbolic / HOL notation; plain syntax for
|
wenzelm@7238
|
1355 |
Eps operator is provided as well: "SOME x. P[x]";
|
wenzelm@7238
|
1356 |
|
berghofe@7320
|
1357 |
* HOL/Sum.thy: sum_case has been moved to HOL/Datatype;
|
wenzelm@7261
|
1358 |
|
wenzelm@7280
|
1359 |
* HOL/Univ.thy: infix syntax <*>, <+>, <**>, <+> eliminated and made
|
wenzelm@7280
|
1360 |
thus available for user theories;
|
wenzelm@7280
|
1361 |
|
wenzelm@7300
|
1362 |
* HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with
|
wenzelm@7300
|
1363 |
HOL/List; hardly an INCOMPATIBILITY since '>>' syntax is used all the
|
wenzelm@7300
|
1364 |
time;
|
wenzelm@7300
|
1365 |
|
wenzelm@7986
|
1366 |
* HOL: new tactic smp_tac: int -> int -> tactic, which applies spec
|
wenzelm@7986
|
1367 |
several times and then mp;
|
oheimb@7492
|
1368 |
|
wenzelm@7215
|
1369 |
|
paulson@7113
|
1370 |
*** LK ***
|
paulson@7113
|
1371 |
|
wenzelm@7215
|
1372 |
* the notation <<...>> is now available as a notation for sequences of
|
wenzelm@7215
|
1373 |
formulas;
|
paulson@7113
|
1374 |
|
paulson@7113
|
1375 |
* the simplifier is now installed
|
paulson@7113
|
1376 |
|
wenzelm@8729
|
1377 |
* the axiom system has been generalized (thanks to Soren Heilmann)
|
paulson@7113
|
1378 |
|
paulson@7113
|
1379 |
* the classical reasoner now has a default rule database
|
paulson@7113
|
1380 |
|
paulson@7113
|
1381 |
|
paulson@6064
|
1382 |
*** ZF ***
|
paulson@6064
|
1383 |
|
paulson@6064
|
1384 |
* new primrec section allows primitive recursive functions to be given
|
wenzelm@6269
|
1385 |
directly (as in HOL) over datatypes and the natural numbers;
|
paulson@6064
|
1386 |
|
wenzelm@6269
|
1387 |
* new tactics induct_tac and exhaust_tac for induction (or case
|
wenzelm@6269
|
1388 |
analysis) over datatypes and the natural numbers;
|
paulson@6064
|
1389 |
|
paulson@6064
|
1390 |
* the datatype declaration of type T now defines the recursor T_rec;
|
paulson@6064
|
1391 |
|
paulson@6141
|
1392 |
* simplification automatically does freeness reasoning for datatype
|
wenzelm@6269
|
1393 |
constructors;
|
paulson@6141
|
1394 |
|
wenzelm@6269
|
1395 |
* automatic type-inference, with AddTCs command to insert new
|
wenzelm@6269
|
1396 |
type-checking rules;
|
paulson@6155
|
1397 |
|
wenzelm@6269
|
1398 |
* datatype introduction rules are now added as Safe Introduction rules
|
wenzelm@6269
|
1399 |
to the claset;
|
paulson@6155
|
1400 |
|
wenzelm@6269
|
1401 |
* the syntax "if P then x else y" is now available in addition to
|
wenzelm@6269
|
1402 |
if(P,x,y);
|
wenzelm@6269
|
1403 |
|
paulson@6069
|
1404 |
|
wenzelm@6343
|
1405 |
*** Internal programming interfaces ***
|
wenzelm@6343
|
1406 |
|
wenzelm@7919
|
1407 |
* tuned simplifier trace output; new flag debug_simp;
|
wenzelm@7919
|
1408 |
|
wenzelm@7420
|
1409 |
* structures Vartab / Termtab (instances of TableFun) offer efficient
|
wenzelm@7420
|
1410 |
tables indexed by indexname_ord / term_ord (compatible with aconv);
|
wenzelm@7420
|
1411 |
|
wenzelm@6386
|
1412 |
* AxClass.axclass_tac lost the theory argument;
|
wenzelm@6386
|
1413 |
|
wenzelm@6343
|
1414 |
* tuned current_goals_markers semantics: begin / end goal avoids
|
wenzelm@6343
|
1415 |
printing empty lines;
|
wenzelm@6343
|
1416 |
|
wenzelm@6343
|
1417 |
* removed prs and prs_fn hook, which was broken because it did not
|
wenzelm@6343
|
1418 |
include \n in its semantics, forcing writeln to add one
|
wenzelm@6343
|
1419 |
uncoditionally; replaced prs_fn by writeln_fn; consider std_output:
|
wenzelm@6343
|
1420 |
string -> unit if you really want to output text without newline;
|
wenzelm@6343
|
1421 |
|
wenzelm@6343
|
1422 |
* Symbol.output subject to print mode; INCOMPATIBILITY: defaults to
|
wenzelm@6343
|
1423 |
plain output, interface builders may have to enable 'isabelle_font'
|
wenzelm@6343
|
1424 |
mode to get Isabelle font glyphs as before;
|
wenzelm@6343
|
1425 |
|
wenzelm@6343
|
1426 |
* refined token_translation interface; INCOMPATIBILITY: output length
|
wenzelm@6343
|
1427 |
now of type real instead of int;
|
wenzelm@6343
|
1428 |
|
wenzelm@7196
|
1429 |
* theory loader actions may be traced via new ThyInfo.add_hook
|
wenzelm@7196
|
1430 |
interface (see src/Pure/Thy/thy_info.ML); example application: keep
|
wenzelm@7196
|
1431 |
your own database of information attached to *whole* theories -- as
|
wenzelm@7196
|
1432 |
opposed to intra-theory data slots offered via TheoryDataFun;
|
wenzelm@7196
|
1433 |
|
wenzelm@7647
|
1434 |
* proper handling of dangling sort hypotheses (at last!);
|
wenzelm@7647
|
1435 |
Thm.strip_shyps and Drule.strip_shyps_warning take care of removing
|
wenzelm@7647
|
1436 |
extra sort hypotheses that can be witnessed from the type signature;
|
wenzelm@7986
|
1437 |
the force_strip_shyps flag is gone, any remaining shyps are simply
|
wenzelm@7986
|
1438 |
left in the theorem (with a warning issued by strip_shyps_warning);
|
wenzelm@7647
|
1439 |
|
wenzelm@6343
|
1440 |
|
paulson@6064
|
1441 |
|
wenzelm@5781
|
1442 |
New in Isabelle98-1 (October 1998)
|
wenzelm@5781
|
1443 |
----------------------------------
|
wenzelm@5781
|
1444 |
|
wenzelm@5127
|
1445 |
*** Overview of INCOMPATIBILITIES (see below for more details) ***
|
wenzelm@4842
|
1446 |
|
wenzelm@5726
|
1447 |
* several changes of automated proof tools;
|
wenzelm@5207
|
1448 |
|
wenzelm@5726
|
1449 |
* HOL: major changes to the inductive and datatype packages, including
|
wenzelm@5726
|
1450 |
some minor incompatibilities of theory syntax;
|
wenzelm@5373
|
1451 |
|
wenzelm@5726
|
1452 |
* HOL: renamed r^-1 to 'converse' from 'inverse'; 'inj_onto' is now
|
wenzelm@5217
|
1453 |
called `inj_on';
|
paulson@5160
|
1454 |
|
nipkow@5275
|
1455 |
* HOL: removed duplicate thms in Arith:
|
nipkow@5275
|
1456 |
less_imp_add_less should be replaced by trans_less_add1
|
nipkow@5275
|
1457 |
le_imp_add_le should be replaced by trans_le_add1
|
paulson@5160
|
1458 |
|
wenzelm@5726
|
1459 |
* HOL: unary minus is now overloaded (new type constraints may be
|
wenzelm@5726
|
1460 |
required);
|
paulson@5490
|
1461 |
|
wenzelm@5726
|
1462 |
* HOL and ZF: unary minus for integers is now #- instead of #~. In
|
wenzelm@5726
|
1463 |
ZF, expressions such as n#-1 must be changed to n#- 1, since #-1 is
|
wenzelm@5726
|
1464 |
now taken as an integer constant.
|
paulson@5541
|
1465 |
|
wenzelm@5726
|
1466 |
* Pure: ML function 'theory_of' renamed to 'theory';
|
wenzelm@5397
|
1467 |
|
wenzelm@5363
|
1468 |
|
wenzelm@5127
|
1469 |
*** Proof tools ***
|
nipkow@4880
|
1470 |
|
nipkow@5657
|
1471 |
* Simplifier:
|
nipkow@5657
|
1472 |
1. Asm_full_simp_tac is now more aggressive.
|
nipkow@5657
|
1473 |
1. It will sometimes reorient premises if that increases their power to
|
nipkow@5657
|
1474 |
simplify.
|
nipkow@5657
|
1475 |
2. It does no longer proceed strictly from left to right but may also
|
nipkow@5657
|
1476 |
rotate premises to achieve further simplification.
|
nipkow@5657
|
1477 |
For compatibility reasons there is now Asm_lr_simp_tac which is like the
|
nipkow@5657
|
1478 |
old Asm_full_simp_tac in that it does not rotate premises.
|
nipkow@5657
|
1479 |
2. The simplifier now knows a little bit about nat-arithmetic.
|
nipkow@4880
|
1480 |
|
wenzelm@5127
|
1481 |
* Classical reasoner: wrapper mechanism for the classical reasoner now
|
wenzelm@5127
|
1482 |
allows for selected deletion of wrappers, by introduction of names for
|
wenzelm@5127
|
1483 |
wrapper functionals. This implies that addbefore, addSbefore,
|
wenzelm@5127
|
1484 |
addaltern, and addSaltern now take a pair (name, tactic) as argument,
|
wenzelm@5127
|
1485 |
and that adding two tactics with the same name overwrites the first
|
wenzelm@5127
|
1486 |
one (emitting a warning).
|
oheimb@4824
|
1487 |
type wrapper = (int -> tactic) -> (int -> tactic)
|
oheimb@4649
|
1488 |
setWrapper, setSWrapper, compWrapper and compSWrapper are replaced by
|
oheimb@4824
|
1489 |
addWrapper, addSWrapper: claset * (string * wrapper) -> claset
|
oheimb@4824
|
1490 |
delWrapper, delSWrapper: claset * string -> claset
|
oheimb@4649
|
1491 |
getWrapper is renamed to appWrappers, getSWrapper to appSWrappers;
|
oheimb@4649
|
1492 |
|
wenzelm@5705
|
1493 |
* Classical reasoner: addbefore/addSbefore now have APPEND/ORELSE
|
wenzelm@5726
|
1494 |
semantics; addbefore now affects only the unsafe part of step_tac
|
wenzelm@5726
|
1495 |
etc.; this affects addss/auto_tac/force_tac, so EXISTING PROOFS MAY
|
wenzelm@5726
|
1496 |
FAIL, but proofs should be fixable easily, e.g. by replacing Auto_tac
|
wenzelm@5726
|
1497 |
by Force_tac;
|
oheimb@5524
|
1498 |
|
wenzelm@5726
|
1499 |
* Classical reasoner: setwrapper to setWrapper and compwrapper to
|
wenzelm@5726
|
1500 |
compWrapper; added safe wrapper (and access functions for it);
|
oheimb@5524
|
1501 |
|
wenzelm@5127
|
1502 |
* HOL/split_all_tac is now much faster and fails if there is nothing
|
wenzelm@5726
|
1503 |
to split. Some EXISTING PROOFS MAY REQUIRE ADAPTION because the order
|
wenzelm@5726
|
1504 |
and the names of the automatically generated variables have changed.
|
wenzelm@5726
|
1505 |
split_all_tac has moved within claset() from unsafe wrappers to safe
|
wenzelm@5726
|
1506 |
wrappers, which means that !!-bound variables are split much more
|
wenzelm@5726
|
1507 |
aggressively, and safe_tac and clarify_tac now split such variables.
|
wenzelm@5726
|
1508 |
If this splitting is not appropriate, use delSWrapper "split_all_tac".
|
wenzelm@5726
|
1509 |
Note: the same holds for record_split_tac, which does the job of
|
wenzelm@5726
|
1510 |
split_all_tac for record fields.
|
wenzelm@5127
|
1511 |
|
wenzelm@5726
|
1512 |
* HOL/Simplifier: Rewrite rules for case distinctions can now be added
|
wenzelm@5726
|
1513 |
permanently to the default simpset using Addsplits just like
|
wenzelm@5726
|
1514 |
Addsimps. They can be removed via Delsplits just like
|
wenzelm@5726
|
1515 |
Delsimps. Lower-case versions are also available.
|
wenzelm@5127
|
1516 |
|
wenzelm@5726
|
1517 |
* HOL/Simplifier: The rule split_if is now part of the default
|
wenzelm@5726
|
1518 |
simpset. This means that the simplifier will eliminate all occurrences
|
wenzelm@5726
|
1519 |
of if-then-else in the conclusion of a goal. To prevent this, you can
|
wenzelm@5726
|
1520 |
either remove split_if completely from the default simpset by
|
wenzelm@5726
|
1521 |
`Delsplits [split_if]' or remove it in a specific call of the
|
wenzelm@5726
|
1522 |
simplifier using `... delsplits [split_if]'. You can also add/delete
|
wenzelm@5726
|
1523 |
other case splitting rules to/from the default simpset: every datatype
|
wenzelm@5726
|
1524 |
generates suitable rules `split_t_case' and `split_t_case_asm' (where
|
wenzelm@5726
|
1525 |
t is the name of the datatype).
|
wenzelm@5127
|
1526 |
|
wenzelm@5726
|
1527 |
* Classical reasoner / Simplifier combination: new force_tac (and
|
wenzelm@5127
|
1528 |
derivatives Force_tac, force) combines rewriting and classical
|
wenzelm@5127
|
1529 |
reasoning (and whatever other tools) similarly to auto_tac, but is
|
wenzelm@5726
|
1530 |
aimed to solve the given subgoal completely.
|
wenzelm@5127
|
1531 |
|
wenzelm@5127
|
1532 |
|
wenzelm@5127
|
1533 |
*** General ***
|
wenzelm@5127
|
1534 |
|
wenzelm@5217
|
1535 |
* new top-level commands `Goal' and `Goalw' that improve upon `goal'
|
wenzelm@5127
|
1536 |
and `goalw': the theory is no longer needed as an explicit argument -
|
wenzelm@5127
|
1537 |
the current theory context is used; assumptions are no longer returned
|
wenzelm@5127
|
1538 |
at the ML-level unless one of them starts with ==> or !!; it is
|
wenzelm@5217
|
1539 |
recommended to convert to these new commands using isatool fixgoal
|
wenzelm@5217
|
1540 |
(backup your sources first!);
|
wenzelm@4842
|
1541 |
|
wenzelm@5217
|
1542 |
* new top-level commands 'thm' and 'thms' for retrieving theorems from
|
wenzelm@5207
|
1543 |
the current theory context, and 'theory' to lookup stored theories;
|
paulson@4806
|
1544 |
|
paulson@5722
|
1545 |
* new theory section 'locale' for declaring constants, assumptions and
|
paulson@5722
|
1546 |
definitions that have local scope;
|
paulson@5722
|
1547 |
|
wenzelm@5127
|
1548 |
* new theory section 'nonterminals' for purely syntactic types;
|
wenzelm@4858
|
1549 |
|
wenzelm@5127
|
1550 |
* new theory section 'setup' for generic ML setup functions
|
wenzelm@5127
|
1551 |
(e.g. package initialization);
|
wenzelm@4869
|
1552 |
|
wenzelm@5131
|
1553 |
* the distribution now includes Isabelle icons: see
|
wenzelm@5131
|
1554 |
lib/logo/isabelle-{small,tiny}.xpm;
|
wenzelm@5131
|
1555 |
|
wenzelm@5363
|
1556 |
* isatool install - install binaries with absolute references to
|
wenzelm@5363
|
1557 |
ISABELLE_HOME/bin;
|
wenzelm@5363
|
1558 |
|
wenzelm@5572
|
1559 |
* isatool logo -- create instances of the Isabelle logo (as EPS);
|
wenzelm@5572
|
1560 |
|
wenzelm@5407
|
1561 |
* print mode 'emacs' reserved for Isamode;
|
wenzelm@5407
|
1562 |
|
wenzelm@5726
|
1563 |
* support multiple print (ast) translations per constant name;
|
wenzelm@5726
|
1564 |
|
wenzelm@6925
|
1565 |
* theorems involving oracles are now printed with a suffixed [!];
|
wenzelm@6925
|
1566 |
|
wenzelm@4711
|
1567 |
|
paulson@4661
|
1568 |
*** HOL ***
|
paulson@4661
|
1569 |
|
wenzelm@5710
|
1570 |
* there is now a tutorial on Isabelle/HOL (do 'isatool doc tutorial');
|
nipkow@5709
|
1571 |
|
wenzelm@5217
|
1572 |
* HOL/inductive package reorganized and improved: now supports mutual
|
paulson@5267
|
1573 |
definitions such as
|
berghofe@5214
|
1574 |
|
wenzelm@5217
|
1575 |
inductive EVEN ODD
|
wenzelm@5217
|
1576 |
intrs
|
wenzelm@5217
|
1577 |
null "0 : EVEN"
|
wenzelm@5217
|
1578 |
oddI "n : EVEN ==> Suc n : ODD"
|
wenzelm@5217
|
1579 |
evenI "n : ODD ==> Suc n : EVEN"
|
berghofe@5214
|
1580 |
|
wenzelm@5217
|
1581 |
new theorem list "elims" contains an elimination rule for each of the
|
wenzelm@5217
|
1582 |
recursive sets; inductive definitions now handle disjunctive premises
|
wenzelm@5217
|
1583 |
correctly (also ZF);
|
berghofe@5214
|
1584 |
|
wenzelm@5217
|
1585 |
INCOMPATIBILITIES: requires Inductive as an ancestor; component
|
wenzelm@5217
|
1586 |
"mutual_induct" no longer exists - the induction rule is always
|
wenzelm@5217
|
1587 |
contained in "induct";
|
berghofe@5214
|
1588 |
|
berghofe@5214
|
1589 |
|
wenzelm@5217
|
1590 |
* HOL/datatype package re-implemented and greatly improved: now
|
paulson@5267
|
1591 |
supports mutually recursive datatypes such as
|
berghofe@5214
|
1592 |
|
wenzelm@5217
|
1593 |
datatype
|
wenzelm@5217
|
1594 |
'a aexp = IF_THEN_ELSE ('a bexp) ('a aexp) ('a aexp)
|
wenzelm@5217
|
1595 |
| SUM ('a aexp) ('a aexp)
|
wenzelm@5217
|
1596 |
| DIFF ('a aexp) ('a aexp)
|
wenzelm@5217
|
1597 |
| NUM 'a
|
wenzelm@5217
|
1598 |
and
|
wenzelm@5217
|
1599 |
'a bexp = LESS ('a aexp) ('a aexp)
|
wenzelm@5217
|
1600 |
| AND ('a bexp) ('a bexp)
|
wenzelm@5217
|
1601 |
| OR ('a bexp) ('a bexp)
|
wenzelm@5217
|
1602 |
|
paulson@5267
|
1603 |
as well as indirectly recursive datatypes such as
|
wenzelm@5217
|
1604 |
|
wenzelm@5217
|
1605 |
datatype
|
wenzelm@5217
|
1606 |
('a, 'b) term = Var 'a
|
wenzelm@5217
|
1607 |
| App 'b ((('a, 'b) term) list)
|
wenzelm@5217
|
1608 |
|
wenzelm@5217
|
1609 |
The new tactic mutual_induct_tac [<var_1>, ..., <var_n>] i performs
|
wenzelm@5217
|
1610 |
induction on mutually / indirectly recursive datatypes.
|
wenzelm@5217
|
1611 |
|
wenzelm@5217
|
1612 |
Primrec equations are now stored in theory and can be accessed via
|
wenzelm@5217
|
1613 |
<function_name>.simps.
|
wenzelm@5217
|
1614 |
|
wenzelm@5217
|
1615 |
INCOMPATIBILITIES:
|
wenzelm@5217
|
1616 |
|
wenzelm@5217
|
1617 |
- Theories using datatypes must now have theory Datatype as an
|
wenzelm@5217
|
1618 |
ancestor.
|
wenzelm@5217
|
1619 |
- The specific <typename>.induct_tac no longer exists - use the
|
wenzelm@5217
|
1620 |
generic induct_tac instead.
|
berghofe@5226
|
1621 |
- natE has been renamed to nat.exhaust - use exhaust_tac
|
wenzelm@5217
|
1622 |
instead of res_inst_tac ... natE. Note that the variable
|
berghofe@5226
|
1623 |
names in nat.exhaust differ from the names in natE, this
|
wenzelm@5217
|
1624 |
may cause some "fragile" proofs to fail.
|
wenzelm@5217
|
1625 |
- The theorems split_<typename>_case and split_<typename>_case_asm
|
wenzelm@5217
|
1626 |
have been renamed to <typename>.split and <typename>.split_asm.
|
wenzelm@5217
|
1627 |
- Since default sorts of type variables are now handled correctly,
|
wenzelm@5217
|
1628 |
some datatype definitions may have to be annotated with explicit
|
wenzelm@5217
|
1629 |
sort constraints.
|
wenzelm@5217
|
1630 |
- Primrec definitions no longer require function name and type
|
wenzelm@5217
|
1631 |
of recursive argument.
|
wenzelm@5217
|
1632 |
|
wenzelm@5217
|
1633 |
Consider using isatool fixdatatype to adapt your theories and proof
|
wenzelm@5217
|
1634 |
scripts to the new package (backup your sources first!).
|
wenzelm@5217
|
1635 |
|
wenzelm@5217
|
1636 |
|
wenzelm@5726
|
1637 |
* HOL/record package: considerably improved implementation; now
|
wenzelm@5726
|
1638 |
includes concrete syntax for record types, terms, updates; theorems
|
wenzelm@5726
|
1639 |
for surjective pairing and splitting !!-bound record variables; proof
|
wenzelm@5726
|
1640 |
support is as follows:
|
wenzelm@5726
|
1641 |
|
wenzelm@5726
|
1642 |
1) standard conversions (selectors or updates applied to record
|
wenzelm@5726
|
1643 |
constructor terms) are part of the standard simpset;
|
wenzelm@5726
|
1644 |
|
wenzelm@5726
|
1645 |
2) inject equations of the form ((x, y) = (x', y')) == x=x' & y=y' are
|
wenzelm@5726
|
1646 |
made part of standard simpset and claset via addIffs;
|
wenzelm@5726
|
1647 |
|
wenzelm@5726
|
1648 |
3) a tactic for record field splitting (record_split_tac) is part of
|
wenzelm@5726
|
1649 |
the standard claset (addSWrapper);
|
wenzelm@5726
|
1650 |
|
wenzelm@5726
|
1651 |
To get a better idea about these rules you may retrieve them via
|
wenzelm@5726
|
1652 |
something like 'thms "foo.simps"' or 'thms "foo.iffs"', where "foo" is
|
wenzelm@5726
|
1653 |
the name of your record type.
|
wenzelm@5726
|
1654 |
|
wenzelm@5726
|
1655 |
The split tactic 3) conceptually simplifies by the following rule:
|
wenzelm@5726
|
1656 |
|
wenzelm@5726
|
1657 |
"(!!x. PROP ?P x) == (!!a b. PROP ?P (a, b))"
|
wenzelm@5726
|
1658 |
|
wenzelm@5726
|
1659 |
Thus any record variable that is bound by meta-all will automatically
|
wenzelm@5726
|
1660 |
blow up into some record constructor term, consequently the
|
wenzelm@5726
|
1661 |
simplifications of 1), 2) apply. Thus force_tac, auto_tac etc. shall
|
wenzelm@5726
|
1662 |
solve record problems automatically.
|
wenzelm@5726
|
1663 |
|
berghofe@5214
|
1664 |
|
wenzelm@5125
|
1665 |
* reorganized the main HOL image: HOL/Integ and String loaded by
|
wenzelm@5125
|
1666 |
default; theory Main includes everything;
|
wenzelm@5125
|
1667 |
|
paulson@5650
|
1668 |
* automatic simplification of integer sums and comparisons, using cancellation;
|
paulson@5650
|
1669 |
|
oheimb@5526
|
1670 |
* added option_map_eq_Some and not_Some_eq to the default simpset and claset;
|
wenzelm@5125
|
1671 |
|
wenzelm@5127
|
1672 |
* added disj_not1 = "(~P | Q) = (P --> Q)" to the default simpset;
|
wenzelm@5125
|
1673 |
|
wenzelm@5127
|
1674 |
* many new identities for unions, intersections, set difference, etc.;
|
wenzelm@5127
|
1675 |
|
wenzelm@5127
|
1676 |
* expand_if, expand_split, expand_sum_case and expand_nat_case are now
|
wenzelm@5127
|
1677 |
called split_if, split_split, split_sum_case and split_nat_case (to go
|
wenzelm@5127
|
1678 |
with add/delsplits);
|
wenzelm@5127
|
1679 |
|
wenzelm@5127
|
1680 |
* HOL/Prod introduces simplification procedure unit_eq_proc rewriting
|
wenzelm@5127
|
1681 |
(?x::unit) = (); this is made part of the default simpset, which COULD
|
wenzelm@5127
|
1682 |
MAKE EXISTING PROOFS FAIL under rare circumstances (consider
|
wenzelm@5207
|
1683 |
'Delsimprocs [unit_eq_proc];' as last resort); also note that
|
wenzelm@5207
|
1684 |
unit_abs_eta_conv is added in order to counter the effect of
|
wenzelm@5207
|
1685 |
unit_eq_proc on (%u::unit. f u), replacing it by f rather than by
|
wenzelm@5207
|
1686 |
%u.f();
|
wenzelm@5127
|
1687 |
|
wenzelm@5217
|
1688 |
* HOL/Fun INCOMPATIBILITY: `inj_onto' is now called `inj_on' (which
|
wenzelm@5217
|
1689 |
makes more sense);
|
wenzelm@5127
|
1690 |
|
paulson@5475
|
1691 |
* HOL/Set INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
|
paulson@5475
|
1692 |
It and 'sym RS equals0D' are now in the default claset, giving automatic
|
paulson@5475
|
1693 |
disjointness reasoning but breaking a few old proofs.
|
paulson@5267
|
1694 |
|
wenzelm@5217
|
1695 |
* HOL/Relation INCOMPATIBILITY: renamed the relational operator r^-1
|
wenzelm@5217
|
1696 |
to 'converse' from 'inverse' (for compatibility with ZF and some
|
wenzelm@5217
|
1697 |
literature);
|
berghofe@5109
|
1698 |
|
wenzelm@5127
|
1699 |
* HOL/recdef can now declare non-recursive functions, with {} supplied as
|
wenzelm@5127
|
1700 |
the well-founded relation;
|
wenzelm@5085
|
1701 |
|
paulson@5490
|
1702 |
* HOL/Set INCOMPATIBILITY: the complement of set A is now written -A instead of
|
paulson@5490
|
1703 |
Compl A. The "Compl" syntax remains available as input syntax for this
|
paulson@5490
|
1704 |
release ONLY.
|
paulson@5490
|
1705 |
|
wenzelm@5127
|
1706 |
* HOL/Update: new theory of function updates:
|
wenzelm@5127
|
1707 |
f(a:=b) == %x. if x=a then b else f x
|
wenzelm@5127
|
1708 |
may also be iterated as in f(a:=b,c:=d,...);
|
oheimb@4824
|
1709 |
|
wenzelm@5127
|
1710 |
* HOL/Vimage: new theory for inverse image of a function, syntax f-``B;
|
paulson@4899
|
1711 |
|
nipkow@5282
|
1712 |
* HOL/List:
|
nipkow@5282
|
1713 |
- new function list_update written xs[i:=v] that updates the i-th
|
nipkow@5282
|
1714 |
list position. May also be iterated as in xs[i:=a,j:=b,...].
|
nipkow@5428
|
1715 |
- new function `upt' written [i..j(] which generates the list
|
nipkow@5428
|
1716 |
[i,i+1,...,j-1], i.e. the upper bound is excluded. To include the upper
|
nipkow@5428
|
1717 |
bound write [i..j], which is a shorthand for [i..j+1(].
|
nipkow@5282
|
1718 |
- new lexicographic orderings and corresponding wellfoundedness theorems.
|
paulson@4779
|
1719 |
|
wenzelm@5127
|
1720 |
* HOL/Arith:
|
wenzelm@5127
|
1721 |
- removed 'pred' (predecessor) function;
|
wenzelm@5127
|
1722 |
- generalized some theorems about n-1;
|
wenzelm@5127
|
1723 |
- many new laws about "div" and "mod";
|
wenzelm@5127
|
1724 |
- new laws about greatest common divisors (see theory ex/Primes);
|
oheimb@4766
|
1725 |
|
wenzelm@5127
|
1726 |
* HOL/Relation: renamed the relational operator r^-1 "converse"
|
wenzelm@4842
|
1727 |
instead of "inverse";
|
wenzelm@4711
|
1728 |
|
nipkow@5651
|
1729 |
* HOL/Induct/Multiset: a theory of multisets, including the wellfoundedness
|
nipkow@5651
|
1730 |
of the multiset ordering;
|
nipkow@5651
|
1731 |
|
wenzelm@5127
|
1732 |
* directory HOL/Real: a construction of the reals using Dedekind cuts
|
nipkow@5651
|
1733 |
(not included by default);
|
paulson@4806
|
1734 |
|
wenzelm@5127
|
1735 |
* directory HOL/UNITY: Chandy and Misra's UNITY formalism;
|
wenzelm@4711
|
1736 |
|
nipkow@5651
|
1737 |
* directory HOL/Hoare: a new version of Hoare logic which permits many-sorted
|
nipkow@5651
|
1738 |
programs, i.e. different program variables may have different types.
|
nipkow@5651
|
1739 |
|
paulson@5142
|
1740 |
* calling (stac rew i) now fails if "rew" has no effect on the goal
|
paulson@5142
|
1741 |
[previously, this check worked only if the rewrite rule was unconditional]
|
paulson@5308
|
1742 |
Now rew can involve either definitions or equalities (either == or =).
|
wenzelm@5002
|
1743 |
|
wenzelm@5363
|
1744 |
|
paulson@4879
|
1745 |
*** ZF ***
|
paulson@4879
|
1746 |
|
paulson@5332
|
1747 |
* theory Main includes everything; INCOMPATIBILITY: theory ZF.thy contains
|
paulson@5332
|
1748 |
only the theorems proved on ZF.ML;
|
paulson@5160
|
1749 |
|
paulson@5475
|
1750 |
* ZF INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
|
paulson@5475
|
1751 |
It and 'sym RS equals0D' are now in the default claset, giving automatic
|
paulson@5475
|
1752 |
disjointness reasoning but breaking a few old proofs.
|
paulson@5267
|
1753 |
|
paulson@5160
|
1754 |
* ZF/Update: new theory of function updates
|
paulson@5160
|
1755 |
with default rewrite rule f(x:=y) ` z = if(z=x, y, f`z)
|
paulson@5160
|
1756 |
may also be iterated as in f(a:=b,c:=d,...);
|
paulson@5160
|
1757 |
|
paulson@4879
|
1758 |
* in let x=t in u(x), neither t nor u(x) has to be an FOL term.
|
oheimb@4649
|
1759 |
|
paulson@5142
|
1760 |
* calling (stac rew i) now fails if "rew" has no effect on the goal
|
paulson@5142
|
1761 |
[previously, this check worked only if the rewrite rule was unconditional]
|
paulson@5308
|
1762 |
Now rew can involve either definitions or equalities (either == or =).
|
paulson@5142
|
1763 |
|
paulson@5160
|
1764 |
* case_tac provided for compatibility with HOL
|
paulson@5160
|
1765 |
(like the old excluded_middle_tac, but with subgoals swapped)
|
paulson@5160
|
1766 |
|
wenzelm@4842
|
1767 |
|
wenzelm@5127
|
1768 |
*** Internal programming interfaces ***
|
wenzelm@5002
|
1769 |
|
wenzelm@5251
|
1770 |
* Pure: several new basic modules made available for general use, see
|
wenzelm@5251
|
1771 |
also src/Pure/README;
|
wenzelm@5207
|
1772 |
|
wenzelm@5008
|
1773 |
* improved the theory data mechanism to support encapsulation (data
|
wenzelm@5008
|
1774 |
kind name replaced by private Object.kind, acting as authorization
|
wenzelm@5373
|
1775 |
key); new type-safe user interface via functor TheoryDataFun; generic
|
wenzelm@5373
|
1776 |
print_data function becomes basically useless;
|
wenzelm@5002
|
1777 |
|
wenzelm@5251
|
1778 |
* removed global_names compatibility flag -- all theory declarations
|
wenzelm@5251
|
1779 |
are qualified by default;
|
wenzelm@5251
|
1780 |
|
wenzelm@5085
|
1781 |
* module Pure/Syntax now offers quote / antiquote translation
|
wenzelm@5085
|
1782 |
functions (useful for Hoare logic etc. with implicit dependencies);
|
wenzelm@5373
|
1783 |
see HOL/ex/Antiquote for an example use;
|
wenzelm@5085
|
1784 |
|
wenzelm@5127
|
1785 |
* Simplifier now offers conversions (asm_)(full_)rewrite: simpset ->
|
wenzelm@5127
|
1786 |
cterm -> thm;
|
wenzelm@5127
|
1787 |
|
wenzelm@5207
|
1788 |
* new tactical CHANGED_GOAL for checking that a tactic modifies a
|
wenzelm@5207
|
1789 |
subgoal;
|
paulson@5142
|
1790 |
|
wenzelm@5251
|
1791 |
* Display.print_goals function moved to Locale.print_goals;
|
wenzelm@5251
|
1792 |
|
wenzelm@5731
|
1793 |
* standard print function for goals supports current_goals_markers
|
wenzelm@5731
|
1794 |
variable for marking begin of proof, end of proof, start of goal; the
|
wenzelm@5731
|
1795 |
default is ("", "", ""); setting current_goals_markers := ("<proof>",
|
wenzelm@5731
|
1796 |
"</proof>", "<goal>") causes SGML like tagged proof state printing,
|
wenzelm@5731
|
1797 |
for example;
|
wenzelm@5731
|
1798 |
|
wenzelm@5002
|
1799 |
|
wenzelm@5002
|
1800 |
|
wenzelm@4410
|
1801 |
New in Isabelle98 (January 1998)
|
wenzelm@4410
|
1802 |
--------------------------------
|
wenzelm@4410
|
1803 |
|
wenzelm@4410
|
1804 |
*** Overview of INCOMPATIBILITIES (see below for more details) ***
|
wenzelm@4410
|
1805 |
|
wenzelm@4410
|
1806 |
* changed lexical syntax of terms / types: dots made part of long
|
wenzelm@4410
|
1807 |
identifiers, e.g. "%x.x" no longer possible, should be "%x. x";
|
wenzelm@4410
|
1808 |
|
wenzelm@4410
|
1809 |
* simpset (and claset) reference variable replaced by functions
|
wenzelm@4410
|
1810 |
simpset / simpset_ref;
|
wenzelm@4410
|
1811 |
|
wenzelm@4410
|
1812 |
* no longer supports theory aliases (via merge) and non-trivial
|
wenzelm@4410
|
1813 |
implicit merge of thms' signatures;
|
wenzelm@4410
|
1814 |
|
wenzelm@4410
|
1815 |
* most internal names of constants changed due to qualified names;
|
wenzelm@4410
|
1816 |
|
wenzelm@4410
|
1817 |
* changed Pure/Sequence interface (see Pure/seq.ML);
|
wenzelm@4410
|
1818 |
|
wenzelm@3454
|
1819 |
|
paulson@3715
|
1820 |
*** General Changes ***
|
wenzelm@3697
|
1821 |
|
wenzelm@4174
|
1822 |
* hierachically structured name spaces (for consts, types, axms, thms
|
wenzelm@3943
|
1823 |
etc.); new lexical class 'longid' (e.g. Foo.bar.x) may render much of
|
wenzelm@4108
|
1824 |
old input syntactically incorrect (e.g. "%x.x"); COMPATIBILITY:
|
wenzelm@4108
|
1825 |
isatool fixdots ensures space after dots (e.g. "%x. x"); set
|
wenzelm@4174
|
1826 |
long_names for fully qualified output names; NOTE: ML programs
|
wenzelm@4174
|
1827 |
(special tactics, packages etc.) referring to internal names may have
|
wenzelm@4174
|
1828 |
to be adapted to cope with fully qualified names; in case of severe
|
wenzelm@4174
|
1829 |
backward campatibility problems try setting 'global_names' at compile
|
wenzelm@4174
|
1830 |
time to have enrything declared within a flat name space; one may also
|
wenzelm@4174
|
1831 |
fine tune name declarations in theories via the 'global' and 'local'
|
wenzelm@4174
|
1832 |
section;
|
wenzelm@4108
|
1833 |
|
wenzelm@4108
|
1834 |
* reimplemented the implicit simpset and claset using the new anytype
|
wenzelm@4108
|
1835 |
data filed in signatures; references simpset:simpset ref etc. are
|
wenzelm@4108
|
1836 |
replaced by functions simpset:unit->simpset and
|
wenzelm@4108
|
1837 |
simpset_ref:unit->simpset ref; COMPATIBILITY: use isatool fixclasimp
|
wenzelm@4108
|
1838 |
to patch your ML files accordingly;
|
paulson@3856
|
1839 |
|
wenzelm@3857
|
1840 |
* HTML output now includes theory graph data for display with Java
|
wenzelm@3857
|
1841 |
applet or isatool browser; data generated automatically via isatool
|
wenzelm@3901
|
1842 |
usedir (see -i option, ISABELLE_USEDIR_OPTIONS);
|
wenzelm@3857
|
1843 |
|
paulson@3856
|
1844 |
* defs may now be conditional; improved rewrite_goals_tac to handle
|
paulson@3856
|
1845 |
conditional equations;
|
paulson@3856
|
1846 |
|
wenzelm@4174
|
1847 |
* defs now admits additional type arguments, using TYPE('a) syntax;
|
wenzelm@4174
|
1848 |
|
wenzelm@3901
|
1849 |
* theory aliases via merge (e.g. M=A+B+C) no longer supported, always
|
wenzelm@3901
|
1850 |
creates a new theory node; implicit merge of thms' signatures is
|
wenzelm@4112
|
1851 |
restricted to 'trivial' ones; COMPATIBILITY: one may have to use
|
wenzelm@3901
|
1852 |
transfer:theory->thm->thm in (rare) cases;
|
wenzelm@3901
|
1853 |
|
wenzelm@3968
|
1854 |
* improved handling of draft signatures / theories; draft thms (and
|
wenzelm@3968
|
1855 |
ctyps, cterms) are automatically promoted to real ones;
|
wenzelm@3968
|
1856 |
|
wenzelm@3901
|
1857 |
* slightly changed interfaces for oracles: admit many per theory, named
|
wenzelm@3901
|
1858 |
(e.g. oracle foo = mlfun), additional name argument for invoke_oracle;
|
wenzelm@3901
|
1859 |
|
wenzelm@3901
|
1860 |
* print_goals: optional output of const types (set show_consts and
|
wenzelm@3901
|
1861 |
show_types);
|
wenzelm@3851
|
1862 |
|
wenzelm@4388
|
1863 |
* improved output of warnings (###) and errors (***);
|
wenzelm@3697
|
1864 |
|
paulson@4178
|
1865 |
* subgoal_tac displays a warning if the new subgoal has type variables;
|
paulson@4178
|
1866 |
|
paulson@3715
|
1867 |
* removed old README and Makefiles;
|
paulson@3715
|
1868 |
|
paulson@3856
|
1869 |
* replaced print_goals_ref hook by print_current_goals_fn and result_error_fn;
|
wenzelm@3670
|
1870 |
|
paulson@3715
|
1871 |
* removed obsolete init_pps and init_database;
|
paulson@3715
|
1872 |
|
paulson@3715
|
1873 |
* deleted the obsolete tactical STATE, which was declared by
|
paulson@3715
|
1874 |
fun STATE tacfun st = tacfun st st;
|
paulson@3715
|
1875 |
|
wenzelm@4388
|
1876 |
* cd and use now support path variables, e.g. $ISABELLE_HOME, or ~
|
wenzelm@4388
|
1877 |
(which abbreviates $HOME);
|
wenzelm@4269
|
1878 |
|
wenzelm@4269
|
1879 |
* changed Pure/Sequence interface (see Pure/seq.ML); COMPATIBILITY:
|
wenzelm@4269
|
1880 |
use isatool fixseq to adapt your ML programs (this works for fully
|
wenzelm@4269
|
1881 |
qualified references to the Sequence structure only!);
|
wenzelm@4269
|
1882 |
|
wenzelm@4381
|
1883 |
* use_thy no longer requires writable current directory; it always
|
wenzelm@4381
|
1884 |
reloads .ML *and* .thy file, if either one is out of date;
|
wenzelm@4269
|
1885 |
|
paulson@3715
|
1886 |
|
paulson@3715
|
1887 |
*** Classical Reasoner ***
|
paulson@3715
|
1888 |
|
wenzelm@3744
|
1889 |
* Clarify_tac, clarify_tac, clarify_step_tac, Clarify_step_tac: new
|
wenzelm@3744
|
1890 |
tactics that use classical reasoning to simplify a subgoal without
|
wenzelm@3744
|
1891 |
splitting it into several subgoals;
|
paulson@3715
|
1892 |
|
paulson@3719
|
1893 |
* Safe_tac: like safe_tac but uses the default claset;
|
paulson@3719
|
1894 |
|
paulson@3715
|
1895 |
|
paulson@3715
|
1896 |
*** Simplifier ***
|
paulson@3715
|
1897 |
|
paulson@3715
|
1898 |
* added simplification meta rules:
|
paulson@3715
|
1899 |
(asm_)(full_)simplify: simpset -> thm -> thm;
|
paulson@3715
|
1900 |
|
paulson@3715
|
1901 |
* simplifier.ML no longer part of Pure -- has to be loaded by object
|
paulson@3715
|
1902 |
logics (again);
|
paulson@3715
|
1903 |
|
paulson@3715
|
1904 |
* added prems argument to simplification procedures;
|
paulson@3715
|
1905 |
|
paulson@4325
|
1906 |
* HOL, FOL, ZF: added infix function `addsplits':
|
paulson@4325
|
1907 |
instead of `<simpset> setloop (split_tac <thms>)'
|
paulson@4325
|
1908 |
you can simply write `<simpset> addsplits <thms>'
|
paulson@4325
|
1909 |
|
paulson@3715
|
1910 |
|
paulson@3715
|
1911 |
*** Syntax ***
|
paulson@3715
|
1912 |
|
wenzelm@4174
|
1913 |
* TYPE('a) syntax for type reflection terms;
|
wenzelm@4174
|
1914 |
|
wenzelm@3985
|
1915 |
* no longer handles consts with name "" -- declare as 'syntax' instead;
|
paulson@3856
|
1916 |
|
paulson@3856
|
1917 |
* pretty printer: changed order of mixfix annotation preference (again!);
|
wenzelm@3846
|
1918 |
|
paulson@3715
|
1919 |
* Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
|
paulson@3715
|
1920 |
|
paulson@3715
|
1921 |
|
paulson@3715
|
1922 |
*** HOL ***
|
paulson@3715
|
1923 |
|
wenzelm@5726
|
1924 |
* HOL: there is a new splitter `split_asm_tac' that can be used e.g.
|
oheimb@4189
|
1925 |
with `addloop' of the simplifier to faciliate case splitting in premises.
|
oheimb@4189
|
1926 |
|
nipkow@4035
|
1927 |
* HOL/TLA: Stephan Merz's formalization of Lamport's Temporal Logic of Actions;
|
wenzelm@3985
|
1928 |
|
wenzelm@3985
|
1929 |
* HOL/Auth: new protocol proofs including some for the Internet
|
nipkow@4035
|
1930 |
protocol TLS;
|
wenzelm@3985
|
1931 |
|
wenzelm@4125
|
1932 |
* HOL/Map: new theory of `maps' a la VDM;
|
nipkow@3982
|
1933 |
|
wenzelm@4335
|
1934 |
* HOL/simplifier: simplification procedures nat_cancel_sums for
|
wenzelm@4335
|
1935 |
cancelling out common nat summands from =, <, <= (in)equalities, or
|
wenzelm@4335
|
1936 |
differences; simplification procedures nat_cancel_factor for
|
wenzelm@4335
|
1937 |
cancelling common factor from =, <, <= (in)equalities over natural
|
wenzelm@4373
|
1938 |
sums; nat_cancel contains both kinds of procedures, it is installed by
|
wenzelm@4373
|
1939 |
default in Arith.thy -- this COULD MAKE EXISTING PROOFS FAIL;
|
wenzelm@4335
|
1940 |
|
nipkow@3580
|
1941 |
* HOL/simplifier: terms of the form
|
paulson@4325
|
1942 |
`? x. P1(x) & ... & Pn(x) & x=t & Q1(x) & ... Qn(x)' (or t=x)
|
nipkow@3580
|
1943 |
are rewritten to
|
nipkow@4035
|
1944 |
`P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t)',
|
nipkow@4035
|
1945 |
and those of the form
|
paulson@4325
|
1946 |
`! x. P1(x) & ... & Pn(x) & x=t & Q1(x) & ... Qn(x) --> R(x)' (or t=x)
|
nipkow@4035
|
1947 |
are rewritten to
|
nipkow@4035
|
1948 |
`P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t) --> R(t)',
|
nipkow@3580
|
1949 |
|
nipkow@4035
|
1950 |
* HOL/datatype
|
nipkow@4035
|
1951 |
Each datatype `t' now comes with a theorem `split_t_case' of the form
|
nipkow@4035
|
1952 |
|
nipkow@4035
|
1953 |
P(t_case f1 ... fn x) =
|
nipkow@4035
|
1954 |
( (!y1 ... ym1. x = C1 y1 ... ym1 --> P(f1 y1 ... ym1)) &
|
nipkow@4035
|
1955 |
...
|
oheimb@4189
|
1956 |
(!y1 ... ymn. x = Cn y1 ... ymn --> P(f1 y1 ... ymn))
|
nipkow@4035
|
1957 |
)
|
nipkow@4035
|
1958 |
|
oheimb@4930
|
1959 |
and a theorem `split_t_case_asm' of the form
|
oheimb@4189
|
1960 |
|
oheimb@4189
|
1961 |
P(t_case f1 ... fn x) =
|
oheimb@4189
|
1962 |
~( (? y1 ... ym1. x = C1 y1 ... ym1 & ~P(f1 y1 ... ym1)) |
|
oheimb@4189
|
1963 |
...
|
oheimb@4189
|
1964 |
(? y1 ... ymn. x = Cn y1 ... ymn & ~P(f1 y1 ... ymn))
|
oheimb@4189
|
1965 |
)
|
oheimb@4930
|
1966 |
which can be added to a simpset via `addsplits'. The existing theorems
|
oheimb@4930
|
1967 |
expand_list_case and expand_option_case have been renamed to
|
oheimb@4930
|
1968 |
split_list_case and split_option_case.
|
oheimb@4189
|
1969 |
|
nipkow@4361
|
1970 |
* HOL/Arithmetic:
|
nipkow@4361
|
1971 |
- `pred n' is automatically converted to `n-1'.
|
nipkow@4361
|
1972 |
Users are strongly encouraged not to use `pred' any longer,
|
nipkow@4361
|
1973 |
because it will disappear altogether at some point.
|
nipkow@4361
|
1974 |
- Users are strongly encouraged to write "0 < n" rather than
|
nipkow@4361
|
1975 |
"n ~= 0". Theorems and proof tools have been modified towards this
|
nipkow@4361
|
1976 |
`standard'.
|
nipkow@4357
|
1977 |
|
nipkow@4502
|
1978 |
* HOL/Lists:
|
nipkow@4502
|
1979 |
the function "set_of_list" has been renamed "set" (and its theorems too);
|
nipkow@4502
|
1980 |
the function "nth" now takes its arguments in the reverse order and
|
nipkow@4502
|
1981 |
has acquired the infix notation "!" as in "xs!n".
|
paulson@3570
|
1982 |
|
paulson@4154
|
1983 |
* HOL/Set: UNIV is now a constant and is no longer translated to Compl{};
|
paulson@4154
|
1984 |
|
paulson@4154
|
1985 |
* HOL/Set: The operator (UN x.B x) now abbreviates (UN x:UNIV. B x) and its
|
paulson@4154
|
1986 |
specialist theorems (like UN1_I) are gone. Similarly for (INT x.B x);
|
paulson@4154
|
1987 |
|
wenzelm@4575
|
1988 |
* HOL/record: extensible records with schematic structural subtyping
|
wenzelm@4575
|
1989 |
(single inheritance); EXPERIMENTAL version demonstrating the encoding,
|
wenzelm@4575
|
1990 |
still lacks various theorems and concrete record syntax;
|
wenzelm@4575
|
1991 |
|
wenzelm@4125
|
1992 |
|
paulson@3715
|
1993 |
*** HOLCF ***
|
wenzelm@3511
|
1994 |
|
wenzelm@4125
|
1995 |
* removed "axioms" and "generated by" sections;
|
wenzelm@4125
|
1996 |
|
oheimb@4123
|
1997 |
* replaced "ops" section by extended "consts" section, which is capable of
|
wenzelm@4125
|
1998 |
handling the continuous function space "->" directly;
|
wenzelm@4125
|
1999 |
|
wenzelm@4125
|
2000 |
* domain package:
|
wenzelm@4125
|
2001 |
. proves theorems immediately and stores them in the theory,
|
wenzelm@4125
|
2002 |
. creates hierachical name space,
|
wenzelm@4125
|
2003 |
. now uses normal mixfix annotations (instead of cinfix...),
|
wenzelm@4125
|
2004 |
. minor changes to some names and values (for consistency),
|
wenzelm@4125
|
2005 |
. e.g. cases -> casedist, dists_eq -> dist_eqs, [take_lemma] -> take_lemmas,
|
wenzelm@4125
|
2006 |
. separator between mutual domain defs: changed "," to "and",
|
wenzelm@4125
|
2007 |
. improved handling of sort constraints; now they have to
|
wenzelm@4125
|
2008 |
appear on the left-hand side of the equations only;
|
oheimb@4123
|
2009 |
|
oheimb@4123
|
2010 |
* fixed LAM <x,y,zs>.b syntax;
|
wenzelm@3535
|
2011 |
|
wenzelm@3744
|
2012 |
* added extended adm_tac to simplifier in HOLCF -- can now discharge
|
wenzelm@3744
|
2013 |
adm (%x. P (t x)), where P is chainfinite and t continuous;
|
wenzelm@3579
|
2014 |
|
wenzelm@3579
|
2015 |
|
paulson@3719
|
2016 |
*** FOL and ZF ***
|
paulson@3719
|
2017 |
|
wenzelm@5726
|
2018 |
* FOL: there is a new splitter `split_asm_tac' that can be used e.g.
|
oheimb@4189
|
2019 |
with `addloop' of the simplifier to faciliate case splitting in premises.
|
oheimb@4189
|
2020 |
|
wenzelm@3744
|
2021 |
* qed_spec_mp, qed_goal_spec_mp, qed_goalw_spec_mp are available, as
|
wenzelm@3744
|
2022 |
in HOL, they strip ALL and --> from proved theorems;
|
wenzelm@3744
|
2023 |
|
paulson@3719
|
2024 |
|
wenzelm@3579
|
2025 |
|
wenzelm@3006
|
2026 |
New in Isabelle94-8 (May 1997)
|
wenzelm@3006
|
2027 |
------------------------------
|
wenzelm@2654
|
2028 |
|
paulson@3002
|
2029 |
*** General Changes ***
|
paulson@3002
|
2030 |
|
paulson@3002
|
2031 |
* new utilities to build / run / maintain Isabelle etc. (in parts
|
paulson@3002
|
2032 |
still somewhat experimental); old Makefiles etc. still functional;
|
wenzelm@2971
|
2033 |
|
wenzelm@3205
|
2034 |
* new 'Isabelle System Manual';
|
wenzelm@3205
|
2035 |
|
wenzelm@2825
|
2036 |
* INSTALL text, together with ./configure and ./build scripts;
|
wenzelm@2773
|
2037 |
|
wenzelm@3006
|
2038 |
* reimplemented type inference for greater efficiency, better error
|
wenzelm@3006
|
2039 |
messages and clean internal interface;
|
paulson@3002
|
2040 |
|
paulson@3002
|
2041 |
* prlim command for dealing with lots of subgoals (an easier way of
|
paulson@3002
|
2042 |
setting goals_limit);
|
paulson@3002
|
2043 |
|
wenzelm@3006
|
2044 |
|
wenzelm@3006
|
2045 |
*** Syntax ***
|
paulson@3002
|
2046 |
|
wenzelm@3116
|
2047 |
* supports alternative (named) syntax tables (parser and pretty
|
wenzelm@3116
|
2048 |
printer); internal interface is provided by add_modesyntax(_i);
|
wenzelm@3116
|
2049 |
|
paulson@3002
|
2050 |
* Pure, FOL, ZF, HOL, HOLCF now support symbolic input and output; to
|
paulson@3002
|
2051 |
be used in conjunction with the Isabelle symbol font; uses the
|
paulson@3002
|
2052 |
"symbols" syntax table;
|
paulson@3002
|
2053 |
|
wenzelm@2705
|
2054 |
* added token_translation interface (may translate name tokens in
|
wenzelm@2756
|
2055 |
arbitrary ways, dependent on their type (free, bound, tfree, ...) and
|
wenzelm@3116
|
2056 |
the current print_mode); IMPORTANT: user print translation functions
|
wenzelm@3116
|
2057 |
are responsible for marking newly introduced bounds
|
wenzelm@3116
|
2058 |
(Syntax.mark_boundT);
|
wenzelm@2705
|
2059 |
|
wenzelm@2730
|
2060 |
* token translations for modes "xterm" and "xterm_color" that display
|
wenzelm@3006
|
2061 |
names in bold, underline etc. or colors (which requires a color
|
wenzelm@3006
|
2062 |
version of xterm);
|
wenzelm@2730
|
2063 |
|
paulson@3002
|
2064 |
* infixes may now be declared with names independent of their syntax;
|
paulson@3002
|
2065 |
|
paulson@3002
|
2066 |
* added typed_print_translation (like print_translation, but may
|
paulson@3002
|
2067 |
access type of constant);
|
paulson@3002
|
2068 |
|
wenzelm@3006
|
2069 |
|
paulson@3002
|
2070 |
*** Classical Reasoner ***
|
paulson@3002
|
2071 |
|
paulson@3002
|
2072 |
Blast_tac: a new tactic! It is often more powerful than fast_tac, but has
|
paulson@3002
|
2073 |
some limitations. Blast_tac...
|
paulson@3002
|
2074 |
+ ignores addss, addbefore, addafter; this restriction is intrinsic
|
paulson@3002
|
2075 |
+ ignores elimination rules that don't have the correct format
|
wenzelm@5726
|
2076 |
(the conclusion MUST be a formula variable)
|
paulson@3002
|
2077 |
+ ignores types, which can make HOL proofs fail
|
paulson@3002
|
2078 |
+ rules must not require higher-order unification, e.g. apply_type in ZF
|
paulson@3002
|
2079 |
[message "Function Var's argument not a bound variable" relates to this]
|
paulson@3002
|
2080 |
+ its proof strategy is more general but can actually be slower
|
paulson@3002
|
2081 |
|
wenzelm@3107
|
2082 |
* substitution with equality assumptions no longer permutes other
|
wenzelm@3107
|
2083 |
assumptions;
|
paulson@3002
|
2084 |
|
paulson@3002
|
2085 |
* minor changes in semantics of addafter (now called addaltern); renamed
|
paulson@3002
|
2086 |
setwrapper to setWrapper and compwrapper to compWrapper; added safe wrapper
|
wenzelm@3107
|
2087 |
(and access functions for it);
|
paulson@3002
|
2088 |
|
wenzelm@5726
|
2089 |
* improved combination of classical reasoner and simplifier:
|
oheimb@3317
|
2090 |
+ functions for handling clasimpsets
|
oheimb@3317
|
2091 |
+ improvement of addss: now the simplifier is called _after_ the
|
oheimb@3317
|
2092 |
safe steps.
|
oheimb@3317
|
2093 |
+ safe variant of addss called addSss: uses safe simplifications
|
wenzelm@5726
|
2094 |
_during_ the safe steps. It is more complete as it allows multiple
|
oheimb@3317
|
2095 |
instantiations of unknowns (e.g. with slow_tac).
|
wenzelm@3006
|
2096 |
|
paulson@3002
|
2097 |
*** Simplifier ***
|
paulson@3002
|
2098 |
|
wenzelm@3006
|
2099 |
* added interface for simplification procedures (functions that
|
wenzelm@3006
|
2100 |
produce *proven* rewrite rules on the fly, depending on current
|
wenzelm@3006
|
2101 |
redex);
|
wenzelm@3006
|
2102 |
|
wenzelm@3006
|
2103 |
* ordering on terms as parameter (used for ordered rewriting);
|
wenzelm@3006
|
2104 |
|
wenzelm@3107
|
2105 |
* new functions delcongs, deleqcongs, and Delcongs. richer rep_ss;
|
paulson@3002
|
2106 |
|
paulson@3002
|
2107 |
* the solver is now split into a safe and an unsafe part.
|
paulson@3002
|
2108 |
This should be invisible for the normal user, except that the
|
paulson@3002
|
2109 |
functions setsolver and addsolver have been renamed to setSolver and
|
wenzelm@3107
|
2110 |
addSolver; added safe_asm_full_simp_tac;
|
paulson@3002
|
2111 |
|
paulson@3002
|
2112 |
|
paulson@3002
|
2113 |
*** HOL ***
|
paulson@3002
|
2114 |
|
nipkow@3042
|
2115 |
* a generic induction tactic `induct_tac' which works for all datatypes and
|
wenzelm@3107
|
2116 |
also for type `nat';
|
nipkow@3042
|
2117 |
|
nipkow@3316
|
2118 |
* a generic case distinction tactic `exhaust_tac' which works for all
|
nipkow@3316
|
2119 |
datatypes and also for type `nat';
|
nipkow@3316
|
2120 |
|
nipkow@3316
|
2121 |
* each datatype comes with a function `size';
|
nipkow@3316
|
2122 |
|
paulson@3002
|
2123 |
* patterns in case expressions allow tuple patterns as arguments to
|
wenzelm@3107
|
2124 |
constructors, for example `case x of [] => ... | (x,y,z)#ps => ...';
|
paulson@3002
|
2125 |
|
paulson@3002
|
2126 |
* primrec now also works with type nat;
|
paulson@3002
|
2127 |
|
paulson@3338
|
2128 |
* recdef: a new declaration form, allows general recursive functions to be
|
paulson@3338
|
2129 |
defined in theory files. See HOL/ex/Fib, HOL/ex/Primes, HOL/Subst/Unify.
|
paulson@3338
|
2130 |
|
paulson@3002
|
2131 |
* the constant for negation has been renamed from "not" to "Not" to
|
wenzelm@3107
|
2132 |
harmonize with FOL, ZF, LK, etc.;
|
paulson@3002
|
2133 |
|
wenzelm@3107
|
2134 |
* HOL/ex/LFilter theory of a corecursive "filter" functional for
|
wenzelm@3107
|
2135 |
infinite lists;
|
paulson@3002
|
2136 |
|
wenzelm@3227
|
2137 |
* HOL/Modelcheck demonstrates invocation of model checker oracle;
|
wenzelm@3227
|
2138 |
|
paulson@3002
|
2139 |
* HOL/ex/Ring.thy declares cring_simp, which solves equational
|
paulson@3002
|
2140 |
problems in commutative rings, using axiomatic type classes for + and *;
|
paulson@3002
|
2141 |
|
paulson@3002
|
2142 |
* more examples in HOL/MiniML and HOL/Auth;
|
paulson@3002
|
2143 |
|
paulson@3002
|
2144 |
* more default rewrite rules for quantifiers, union/intersection;
|
paulson@3002
|
2145 |
|
nipkow@3321
|
2146 |
* a new constant `arbitrary == @x.False';
|
nipkow@3321
|
2147 |
|
wenzelm@3107
|
2148 |
* HOLCF/IOA replaces old HOL/IOA;
|
wenzelm@3107
|
2149 |
|
wenzelm@5726
|
2150 |
* HOLCF changes: derived all rules and arities
|
wenzelm@5726
|
2151 |
+ axiomatic type classes instead of classes
|
slotosch@2653
|
2152 |
+ typedef instead of faking type definitions
|
paulson@2747
|
2153 |
+ eliminated the internal constants less_fun, less_cfun, UU_fun, UU_cfun etc.
|
wenzelm@2730
|
2154 |
+ new axclasses cpo, chfin, flat with flat < chfin < pcpo < cpo < po
|
slotosch@2653
|
2155 |
+ eliminated the types void, one, tr
|
slotosch@2653
|
2156 |
+ use unit lift and bool lift (with translations) instead of one and tr
|
slotosch@2653
|
2157 |
+ eliminated blift from Lift3.thy (use Def instead of blift)
|
wenzelm@3107
|
2158 |
all eliminated rules are derived as theorems --> no visible changes ;
|
oheimb@2649
|
2159 |
|
wenzelm@3006
|
2160 |
|
paulson@3002
|
2161 |
*** ZF ***
|
wenzelm@2553
|
2162 |
|
paulson@2865
|
2163 |
* ZF now has Fast_tac, Simp_tac and Auto_tac. Union_iff is a now a default
|
paulson@2865
|
2164 |
rewrite rule; this may affect some proofs. eq_cs is gone but can be put back
|
paulson@2865
|
2165 |
as ZF_cs addSIs [equalityI];
|
wenzelm@2553
|
2166 |
|
wenzelm@2554
|
2167 |
|
wenzelm@2732
|
2168 |
|
wenzelm@2553
|
2169 |
New in Isabelle94-7 (November 96)
|
wenzelm@2553
|
2170 |
---------------------------------
|
wenzelm@2553
|
2171 |
|
wenzelm@2553
|
2172 |
* allowing negative levels (as offsets) in prlev and choplev;
|
wenzelm@2553
|
2173 |
|
wenzelm@2554
|
2174 |
* super-linear speedup for large simplifications;
|
wenzelm@2554
|
2175 |
|
wenzelm@2554
|
2176 |
* FOL, ZF and HOL now use miniscoping: rewriting pushes
|
wenzelm@2554
|
2177 |
quantifications in as far as possible (COULD MAKE EXISTING PROOFS
|
wenzelm@2554
|
2178 |
FAIL); can suppress it using the command Delsimps (ex_simps @
|
wenzelm@2554
|
2179 |
all_simps); De Morgan laws are also now included, by default;
|
wenzelm@2554
|
2180 |
|
wenzelm@2554
|
2181 |
* improved printing of ==> : ~:
|
wenzelm@2554
|
2182 |
|
wenzelm@2554
|
2183 |
* new object-logic "Sequents" adds linear logic, while replacing LK
|
wenzelm@2554
|
2184 |
and Modal (thanks to Sara Kalvala);
|
wenzelm@2554
|
2185 |
|
wenzelm@2554
|
2186 |
* HOL/Auth: correctness proofs for authentication protocols;
|
wenzelm@2554
|
2187 |
|
wenzelm@2554
|
2188 |
* HOL: new auto_tac combines rewriting and classical reasoning (many
|
wenzelm@2554
|
2189 |
examples on HOL/Auth);
|
wenzelm@2554
|
2190 |
|
wenzelm@2554
|
2191 |
* HOL: new command AddIffs for declaring theorems of the form P=Q to
|
wenzelm@2554
|
2192 |
the rewriter and classical reasoner simultaneously;
|
wenzelm@2554
|
2193 |
|
wenzelm@2554
|
2194 |
* function uresult no longer returns theorems in "standard" format;
|
wenzelm@2554
|
2195 |
regain previous version by: val uresult = standard o uresult;
|
wenzelm@2554
|
2196 |
|
wenzelm@2554
|
2197 |
|
wenzelm@2554
|
2198 |
|
wenzelm@2554
|
2199 |
New in Isabelle94-6
|
wenzelm@2554
|
2200 |
-------------------
|
wenzelm@2554
|
2201 |
|
wenzelm@2554
|
2202 |
* oracles -- these establish an interface between Isabelle and trusted
|
wenzelm@2554
|
2203 |
external reasoners, which may deliver results as theorems;
|
wenzelm@2554
|
2204 |
|
wenzelm@2554
|
2205 |
* proof objects (in particular record all uses of oracles);
|
wenzelm@2554
|
2206 |
|
wenzelm@2554
|
2207 |
* Simp_tac, Fast_tac, etc. that refer to implicit simpset / claset;
|
wenzelm@2554
|
2208 |
|
wenzelm@2554
|
2209 |
* "constdefs" section in theory files;
|
wenzelm@2554
|
2210 |
|
wenzelm@2554
|
2211 |
* "primrec" section (HOL) no longer requires names;
|
wenzelm@2554
|
2212 |
|
wenzelm@2554
|
2213 |
* internal type "tactic" now simply "thm -> thm Sequence.seq";
|
wenzelm@2554
|
2214 |
|
wenzelm@2554
|
2215 |
|
wenzelm@2554
|
2216 |
|
wenzelm@2554
|
2217 |
New in Isabelle94-5
|
wenzelm@2554
|
2218 |
-------------------
|
wenzelm@2554
|
2219 |
|
wenzelm@2554
|
2220 |
* reduced space requirements;
|
wenzelm@2554
|
2221 |
|
wenzelm@2554
|
2222 |
* automatic HTML generation from theories;
|
wenzelm@2554
|
2223 |
|
wenzelm@2554
|
2224 |
* theory files no longer require "..." (quotes) around most types;
|
wenzelm@2554
|
2225 |
|
wenzelm@2554
|
2226 |
* new examples, including two proofs of the Church-Rosser theorem;
|
wenzelm@2554
|
2227 |
|
wenzelm@2554
|
2228 |
* non-curried (1994) version of HOL is no longer distributed;
|
wenzelm@2554
|
2229 |
|
wenzelm@2553
|
2230 |
|
paulson@2557
|
2231 |
|
paulson@2557
|
2232 |
New in Isabelle94-4
|
paulson@2557
|
2233 |
-------------------
|
paulson@2557
|
2234 |
|
paulson@2747
|
2235 |
* greatly reduced space requirements;
|
paulson@2557
|
2236 |
|
paulson@2557
|
2237 |
* theory files (.thy) no longer require \...\ escapes at line breaks;
|
paulson@2557
|
2238 |
|
wenzelm@5726
|
2239 |
* searchable theorem database (see the section "Retrieving theorems" on
|
paulson@2557
|
2240 |
page 8 of the Reference Manual);
|
paulson@2557
|
2241 |
|
paulson@2557
|
2242 |
* new examples, including Grabczewski's monumental case study of the
|
paulson@2557
|
2243 |
Axiom of Choice;
|
paulson@2557
|
2244 |
|
paulson@2557
|
2245 |
* The previous version of HOL renamed to Old_HOL;
|
paulson@2557
|
2246 |
|
wenzelm@5726
|
2247 |
* The new version of HOL (previously called CHOL) uses a curried syntax
|
paulson@2557
|
2248 |
for functions. Application looks like f a b instead of f(a,b);
|
paulson@2557
|
2249 |
|
paulson@2557
|
2250 |
* Mutually recursive inductive definitions finally work in HOL;
|
paulson@2557
|
2251 |
|
paulson@2557
|
2252 |
* In ZF, pattern-matching on tuples is now available in all abstractions and
|
paulson@2557
|
2253 |
translates to the operator "split";
|
paulson@2557
|
2254 |
|
paulson@2557
|
2255 |
|
paulson@2557
|
2256 |
|
paulson@2557
|
2257 |
New in Isabelle94-3
|
paulson@2557
|
2258 |
-------------------
|
paulson@2557
|
2259 |
|
wenzelm@5726
|
2260 |
* new infix operator, addss, allowing the classical reasoner to
|
paulson@2557
|
2261 |
perform simplification at each step of its search. Example:
|
wenzelm@5726
|
2262 |
fast_tac (cs addss ss)
|
paulson@2557
|
2263 |
|
wenzelm@5726
|
2264 |
* a new logic, CHOL, the same as HOL, but with a curried syntax
|
wenzelm@5726
|
2265 |
for functions. Application looks like f a b instead of f(a,b). Also pairs
|
paulson@2557
|
2266 |
look like (a,b) instead of <a,b>;
|
paulson@2557
|
2267 |
|
paulson@2557
|
2268 |
* PLEASE NOTE: CHOL will eventually replace HOL!
|
paulson@2557
|
2269 |
|
paulson@2557
|
2270 |
* In CHOL, pattern-matching on tuples is now available in all abstractions.
|
paulson@2557
|
2271 |
It translates to the operator "split". A new theory of integers is available;
|
paulson@2557
|
2272 |
|
paulson@2557
|
2273 |
* In ZF, integer numerals now denote two's-complement binary integers.
|
paulson@2557
|
2274 |
Arithmetic operations can be performed by rewriting. See ZF/ex/Bin.ML;
|
paulson@2557
|
2275 |
|
wenzelm@5726
|
2276 |
* Many new examples: I/O automata, Church-Rosser theorem, equivalents
|
paulson@2557
|
2277 |
of the Axiom of Choice;
|
paulson@2557
|
2278 |
|
paulson@2557
|
2279 |
|
paulson@2557
|
2280 |
|
paulson@2557
|
2281 |
New in Isabelle94-2
|
paulson@2557
|
2282 |
-------------------
|
paulson@2557
|
2283 |
|
wenzelm@5726
|
2284 |
* Significantly faster resolution;
|
paulson@2557
|
2285 |
|
paulson@2557
|
2286 |
* the different sections in a .thy file can now be mixed and repeated
|
paulson@2557
|
2287 |
freely;
|
paulson@2557
|
2288 |
|
paulson@2557
|
2289 |
* Database of theorems for FOL, HOL and ZF. New
|
paulson@2557
|
2290 |
commands including qed, qed_goal and bind_thm store theorems in the database.
|
paulson@2557
|
2291 |
|
paulson@2557
|
2292 |
* Simple database queries: return a named theorem (get_thm) or all theorems of
|
paulson@2557
|
2293 |
a given theory (thms_of), or find out what theory a theorem was proved in
|
paulson@2557
|
2294 |
(theory_of_thm);
|
paulson@2557
|
2295 |
|
paulson@2557
|
2296 |
* Bugs fixed in the inductive definition and datatype packages;
|
paulson@2557
|
2297 |
|
paulson@2557
|
2298 |
* The classical reasoner provides deepen_tac and depth_tac, making FOL_dup_cs
|
paulson@2557
|
2299 |
and HOL_dup_cs obsolete;
|
paulson@2557
|
2300 |
|
paulson@2557
|
2301 |
* Syntactic ambiguities caused by the new treatment of syntax in Isabelle94-1
|
paulson@2557
|
2302 |
have been removed;
|
paulson@2557
|
2303 |
|
paulson@2557
|
2304 |
* Simpler definition of function space in ZF;
|
paulson@2557
|
2305 |
|
paulson@2557
|
2306 |
* new results about cardinal and ordinal arithmetic in ZF;
|
paulson@2557
|
2307 |
|
paulson@2557
|
2308 |
* 'subtype' facility in HOL for introducing new types as subsets of existing
|
paulson@2557
|
2309 |
types;
|
paulson@2557
|
2310 |
|
paulson@2557
|
2311 |
|
wenzelm@2553
|
2312 |
$Id$
|