1.1 --- a/doc-src/ZF/ZF.tex Wed Feb 16 10:50:57 2000 +0100
1.2 +++ b/doc-src/ZF/ZF.tex Wed Feb 16 10:51:23 2000 +0100
1.3 @@ -909,14 +909,14 @@
1.4
1.5 \begin{figure}
1.6 \begin{ttbox}
1.7 -\tdx{lamI} a:A ==> <a,b(a)> : (lam x:A. b(x))
1.8 -\tdx{lamE} [| p: (lam x:A. b(x)); !!x.[| x:A; p=<x,b(x)> |] ==> P
1.9 - |] ==> P
1.10 -
1.11 -\tdx{lam_type} [| !!x. x:A ==> b(x): B(x) |] ==> (lam x:A. b(x)) : Pi(A,B)
1.12 -
1.13 -\tdx{beta} a : A ==> (lam x:A. b(x)) ` a = b(a)
1.14 -\tdx{eta} f : Pi(A,B) ==> (lam x:A. f`x) = f
1.15 +\tdx{lamI} a:A ==> <a,b(a)> : (lam x:A. b(x))
1.16 +\tdx{lamE} [| p: (lam x:A. b(x)); !!x.[| x:A; p=<x,b(x)> |] ==> P
1.17 + |] ==> P
1.18 +
1.19 +\tdx{lam_type} [| !!x. x:A ==> b(x): B(x) |] ==> (lam x:A. b(x)) : Pi(A,B)
1.20 +
1.21 +\tdx{beta} a : A ==> (lam x:A. b(x)) ` a = b(a)
1.22 +\tdx{eta} f : Pi(A,B) ==> (lam x:A. f`x) = f
1.23 \end{ttbox}
1.24 \caption{$\lambda$-abstraction} \label{zf-lam}
1.25 \end{figure}
1.26 @@ -1263,7 +1263,8 @@
1.27 \tdx{nat_def} nat == lfp(lam r: Pow(Inf). {\ttlbrace}0{\ttrbrace} Un {\ttlbrace}succ(x). x:r{\ttrbrace}
1.28
1.29 \tdx{mod_def} m mod n == transrec(m, \%j f. if j:n then j else f`(j#-n))
1.30 -\tdx{div_def} m div n == transrec(m, \%j f. if j:n then 0 else succ(f`(j#-n)))
1.31 +\tdx{div_def} m div n == transrec(m, \%j f. if j:n then 0
1.32 + else succ(f`(j#-n)))
1.33
1.34 \tdx{nat_case_def} nat_case(a,b,k) ==
1.35 THE y. k=0 & y=a | (EX x. k=succ(x) & y=b(x))
1.36 @@ -1285,7 +1286,8 @@
1.37 \tdx{mult_0} 0 #* n = 0
1.38 \tdx{mult_succ} succ(m) #* n = n #+ (m #* n)
1.39 \tdx{mult_commute} [| m:nat; n:nat |] ==> m #* n = n #* m
1.40 -\tdx{add_mult_dist} [| m:nat; k:nat |] ==> (m #+ n) #* k = (m #* k){\thinspace}#+{\thinspace}(n #* k)
1.41 +\tdx{add_mult_dist} [| m:nat; k:nat |] ==>
1.42 + (m #+ n) #* k = (m #* k) #+ (n #* k)
1.43 \tdx{mult_assoc}
1.44 [| m:nat; n:nat; k:nat |] ==> (m #* n) #* k = m #* (n #* k)
1.45 \tdx{mod_quo_equality}
1.46 @@ -1452,7 +1454,7 @@
1.47 essentially type-checking. Such proofs are built by applying rules such as
1.48 these:
1.49 \begin{ttbox}
1.50 -[| ?P ==> ?a : ?A; ~ ?P ==> ?b : ?A |] ==> (if ?P then ?a else ?b) : ?A
1.51 +[| ?P ==> ?a: ?A; ~?P ==> ?b: ?A |] ==> (if ?P then ?a else ?b): ?A
1.52
1.53 [| ?m : nat; ?n : nat |] ==> ?m #+ ?n : nat
1.54
1.55 @@ -1625,7 +1627,8 @@
1.56 and forests:
1.57 \begin{ttbox}
1.58 [| x : tree_forest(A);
1.59 - !!a f. [| a : A; f : forest(A); P(f) |] ==> P(Tcons(a, f)); P(Fnil);
1.60 + !!a f. [| a : A; f : forest(A); P(f) |] ==> P(Tcons(a, f));
1.61 + P(Fnil);
1.62 !!f t. [| t : tree(A); P(t); f : forest(A); P(f) |]
1.63 ==> P(Fcons(t, f))
1.64 |] ==> P(x)
1.65 @@ -1647,7 +1650,7 @@
1.66 refers to the monotonic operator, \texttt{list}:
1.67 \begin{ttbox}
1.68 [| x : term(A);
1.69 - !!a l. [| a : A; l : list(Collect(term(A), P)) |] ==> P(Apply(a, l))
1.70 + !!a l. [| a: A; l: list(Collect(term(A), P)) |] ==> P(Apply(a, l))
1.71 |] ==> P(x)
1.72 \end{ttbox}
1.73 The file \texttt{ex/Term.ML} derives two higher-level induction rules, one of
1.74 @@ -1797,7 +1800,8 @@
1.75 {\out l : bt(A) ==> ALL x r. Br(x, l, r) ~= l}
1.76 {\out 1. ALL x r. Br(x, Lf, r) ~= Lf}
1.77 {\out 2. !!a t1 t2.}
1.78 -{\out [| a : A; t1 : bt(A); ALL x r. Br(x, t1, r) ~= t1; t2 : bt(A);}
1.79 +{\out [| a : A; t1 : bt(A);}
1.80 +{\out ALL x r. Br(x, t1, r) ~= t1; t2 : bt(A);}
1.81 {\out ALL x r. Br(x, t2, r) ~= t2 |]}
1.82 {\out ==> ALL x r. Br(x, Br(a, t1, t2), r) ~= Br(a, t1, t2)}
1.83 \end{ttbox}
1.84 @@ -1820,7 +1824,8 @@
1.85 theorems for each constructor. This is trivial, using the function given us
1.86 for that purpose:
1.87 \begin{ttbox}
1.88 -val Br_iff = bt.mk_free "Br(a,l,r)=Br(a',l',r') <-> a=a' & l=l' & r=r'";
1.89 +val Br_iff =
1.90 + bt.mk_free "Br(a,l,r)=Br(a',l',r') <-> a=a' & l=l' & r=r'";
1.91 {\out val Br_iff =}
1.92 {\out "Br(?a, ?l, ?r) = Br(?a', ?l', ?r') <->}
1.93 {\out ?a = ?a' & ?l = ?l' & ?r = ?r'" : thm}
1.94 @@ -1834,7 +1839,8 @@
1.95 val BrE = bt.mk_cases "Br(a,l,r) : bt(A)";
1.96 {\out val BrE =}
1.97 {\out "[| Br(?a, ?l, ?r) : bt(?A);}
1.98 -{\out [| ?a : ?A; ?l : bt(?A); ?r : bt(?A) |] ==> ?Q |] ==> ?Q" : thm}
1.99 +{\out [| ?a : ?A; ?l : bt(?A); ?r : bt(?A) |] ==> ?Q |]}
1.100 +{\out ==> ?Q" : thm}
1.101 \end{ttbox}
1.102
1.103
1.104 @@ -2021,7 +2027,7 @@
1.105 type_elims {\it elimination rules for type-checking}
1.106 \end{ttbox}
1.107 A coinductive definition is identical, but starts with the keyword
1.108 -{\tt coinductive}.
1.109 +{\tt co\-inductive}.
1.110
1.111 The {\tt monos}, {\tt con\_defs}, {\tt type\_intrs} and {\tt type\_elims}
1.112 sections are optional. If present, each is specified either as a list of
1.113 @@ -2031,7 +2037,7 @@
1.114 error messages. You can then inspect the file on the temporary directory.
1.115
1.116 \begin{description}
1.117 -\item[\it domain declarations] consist of one or more items of the form
1.118 +\item[\it domain declarations] are items of the form
1.119 {\it string\/}~{\tt <=}~{\it string}, associating each recursive set with
1.120 its domain. (The domain is some existing set that is large enough to
1.121 hold the new set being defined.)