test/Tools/isac/Knowledge/polyeq-1.sml
author wneuper <Walther.Neuper@jku.at>
Thu, 04 Aug 2022 12:48:37 +0200
changeset 60509 2e0b7ca391dc
parent 60500 59a3af532717
child 60556 486223010ea8
permissions -rw-r--r--
polish naming in Rewrite_Order
     1 (* Title:  Knowledge/polyeq-1.sml
     2            testexamples for PolyEq, poynomial equations and equational systems
     3    Author: Richard Lang 2003  
     4    (c) due to copyright terms
     5 
     6 Separation into polyeq-1.sml and polyeq-1a.sml due to 
     7 *)
     8 
     9 "-----------------------------------------------------------------";
    10 "table of contents -----------------------------------------------";
    11 "-----------------------------------------------------------------";
    12 "------ polyeq-1.sml ---------------------------------------------";
    13 "----------- tests on predicates in problems ---------------------";
    14 "----------- test matching problems ------------------------------";
    15 "----------- prep. for introduction of Matthias Goldgruber 2003 trials on rewrite orders -----";
    16 "----------- open local of fun ord_make_polynomial_in ------------------------------------------";
    17 "----------- Matthias Goldgruber 2003 trials on rewrite orders -------------------------------";
    18 "----------- lin.eq degree_0 -------------------------------------";
    19 "----------- test thm's d2_pq_formulsxx[_neg]---------------------";
    20 "----------- equality (2 +(- 1)*x + x \<up> 2 = (0::real)) ----------------------------------------";
    21 "----------- equality (- 2 +(- 1)*x + 1*x \<up> 2 = 0) ---------------------------------------------";
    22 "----------- equality (- 2 + x + x \<up> 2 = 0) ---------------------------------------------------";
    23 "----------- equality (2 + x + x \<up> 2 = 0) ----------------------------------------------------";
    24 "----------- equality (- 2 + x + 1*x \<up> 2 = 0)) ------------------------------------------------";
    25 "----------- equality (1*x +   x \<up> 2 = 0) ----------------------------------------------------";
    26 "----------- equality (1*x + 1*x \<up> 2 = 0) ----------------------------------------------------";
    27 "----------- equality (x +   x \<up> 2 = 0) ------------------------------------------------------";
    28 "----------- equality (x + 1*x \<up> 2 = 0) ------------------------------------------------------";
    29 "----------- equality (-4 + x \<up> 2 = 0) -------------------------------------------------------";
    30 "----------- equality (4 + 1*x \<up> 2 = 0) -------------------------------------------------------";
    31 "----------- equality (1 +(- 1)*x + 2*x \<up> 2 = 0) ----------------------------------------------";
    32 "----------- equality (- 1 + x + 2*x \<up> 2 = 0) -------------------------------------------------";
    33 "----------- equality (1 + x + 2*x \<up> 2 = 0) --------------------------------------------------";
    34 "----------- (-8 - 2*x + x \<up> 2 = 0),  (*Schalk 2, S.67 Nr.31.b----";
    35 "----------- (-8 - 2*x + x \<up> 2 = 0),  by rewriting ---------------";
    36 "----------- (- 16 + 4*x + 2*x \<up> 2 = 0), --------------------------";
    37 "-----------------------------------------------------------------";
    38 "------ polyeq-2.sml ---------------------------------------------";
    39 "----------- (a*b - (a+b)*x + x \<up> 2 = 0), (*Schalk 2,S.68Nr.44.a*)";
    40 "----------- (-64 + x \<up> 2 = 0), (*Schalk 2, S.66 Nr.1.a~--------*)";
    41 "----------- (- 147 + 3*x \<up> 2 = 0), (*Schalk 2, S.66 Nr.1.b------*)";
    42 "----------- (3*x - 1 - (5*x - (2 - 4*x)) = - 11),(*Schalk Is86Bsp5";
    43 "----------- ((x+1)*(x+2) - (3*x - 2) \<up> 2=.. Schalk II s.68 Bsp 37";
    44 "----------- rls make_polynomial_in ------------------------------";
    45 "----------- interSteps ([1],Res); on Schalk Is86Bsp5-------------";
    46 "----------- rls d2_polyeq_bdv_only_simplify ---------------------";
    47 "-----------------------------------------------------------------";
    48 "-----------------------------------------------------------------";
    49 
    50 "----------- tests on predicates in problems ---------------------";
    51 "----------- tests on predicates in problems ---------------------";
    52 "----------- tests on predicates in problems ---------------------";
    53 val thy = @{theory};
    54 val ctxt = Proof_Context.init_global thy;
    55 
    56  val t1 = TermC.parseNEW' ctxt "lhs (-8 - 2*x + x \<up> 2 = 0)";
    57  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t1;
    58  if ((UnparseC.term t) = "- 8 - 2 * x + x \<up> 2") then ()
    59  else  error "polyeq.sml: diff.behav. in lhs";
    60 
    61  val t2 = TermC.parseNEW' ctxt "(-8 - 2*x + x \<up> 2) is_expanded_in x";
    62  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t2;
    63  if (UnparseC.term t) = "True" then ()
    64  else  error "polyeq.sml: diff.behav. 1 in is_expended_in";
    65 
    66  val t0 = TermC.parseNEW' ctxt "(sqrt(x)) is_poly_in x";
    67  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t0;
    68  if (UnparseC.term t) = "False" then ()
    69  else  error "polyeq.sml: diff.behav. 2 in is_poly_in";
    70 
    71  val t3 = TermC.parseNEW' ctxt "(-8 + (- 1)*2*x + x \<up> 2) is_poly_in x";
    72  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t3;
    73  if (UnparseC.term t) = "True" then ()
    74  else  error "polyeq.sml: diff.behav. 3 in is_poly_in";
    75 
    76  val t4 = TermC.parseNEW' ctxt "(lhs (-8 + (- 1)*2*x + x \<up> 2 = 0)) is_expanded_in x";
    77  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t4;
    78  if (UnparseC.term t) = "True" then ()
    79  else  error "polyeq.sml: diff.behav. 4 in is_expended_in";
    80 
    81  val t6 = TermC.parseNEW' ctxt "(lhs (-8 - 2*x + x \<up> 2 = 0)) is_expanded_in x";
    82  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t6;
    83  if (UnparseC.term t) = "True" then ()
    84  else  error "polyeq.sml: diff.behav. 5 in is_expended_in";
    85  
    86  val t3 = TermC.parseNEW' ctxt"((-8 - 2*x + x \<up> 2) has_degree_in x) = 2";
    87  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t3;
    88  if (UnparseC.term t) = "True" then ()
    89  else  error "polyeq.sml: diff.behav. in has_degree_in_in";
    90 
    91  val t3 = TermC.parseNEW' ctxt "((sqrt(x)) has_degree_in x) = 2";
    92  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t3;
    93  if (UnparseC.term t) = "False" then ()
    94  else  error "polyeq.sml: diff.behav. 6 in has_degree_in_in";
    95 
    96  val t4 = TermC.parseNEW' ctxt 
    97 	      "((-8 - 2*x + x \<up> 2) has_degree_in x) = 1";
    98  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t4;
    99  if (UnparseC.term t) = "False" then ()
   100  else  error "polyeq.sml: diff.behav. 7 in has_degree_in_in";
   101 
   102 val t5 = TermC.parseNEW' ctxt 
   103 	      "((-8 - 2*x + x \<up> 2) has_degree_in x) = 2";
   104  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_prls t5;
   105  if (UnparseC.term t) = "True" then ()
   106  else  error "polyeq.sml: diff.behav. 8 in has_degree_in_in";
   107 
   108 "----------- test matching problems --------------------------0---";
   109 "----------- test matching problems --------------------------0---";
   110 "----------- test matching problems --------------------------0---";
   111 val fmz = ["equality (-8 - 2*x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   112 if M_Match.match_pbl fmz (Problem.from_store ["expanded", "univariate", "equation"]) =
   113   M_Match.Matches' {Find = [Correct "solutions L"], 
   114             With = [], 
   115             Given = [Correct "equality (- 8 - 2 * x + x \<up> 2 = 0)", Correct "solveFor x"], 
   116             Where = [Correct "matches (?a = 0) (- 8 - 2 * x + x \<up> 2 = 0)", 
   117                      Correct "lhs (- 8 - 2 * x + x \<up> 2 = 0) is_expanded_in x"], 
   118             Relate = []}
   119 then () else error "M_Match.match_pbl [expanded,univariate,equation]";
   120 
   121 if M_Match.match_pbl fmz (Problem.from_store ["degree_2", "expanded", "univariate", "equation"]) =
   122   M_Match.Matches' {Find = [Correct "solutions L"], 
   123             With = [], 
   124             Given = [Correct "equality (- 8 - 2 * x + x \<up> 2 = 0)", Correct "solveFor x"], 
   125             Where = [Correct "lhs (- 8 - 2 * x + x \<up> 2 = 0) has_degree_in x = 2"], 
   126             Relate = []}              (*before WN110906 was: has_degree_in x =!= 2"]*)
   127 then () else error "M_Match.match_pbl [degree_2,expanded,univariate,equation]";
   128 
   129 
   130 "----------- prep. for introduction of Matthias Goldgruber 2003 trials on rewrite orders -----";
   131 "----------- prep. for introduction of Matthias Goldgruber 2003 trials on rewrite orders -----";
   132 "----------- prep. for introduction of Matthias Goldgruber 2003 trials on rewrite orders -----";
   133 (*##################################################################################
   134 ----------- 28.2.03: war nicht upgedatet und ausgeklammert in ROOT.ML-->Test_Isac.thy
   135 
   136   (*Aufgabe zum Einstieg in die Arbeit...*)
   137   val t = TermC.parseNEW' ctxt "a*b - (a+b)*x + x \<up> 2 = 0";
   138   (*ein 'ruleset' aus Poly.ML wird angewandt...*)
   139   val SOME (t,_) = rewrite_set_ thy Poly_erls false make_polynomial t;
   140   UnparseC.term t;
   141   "a * b + (- 1 * (a * x) + (- 1 * (b * x) + x \<up> 2)) = 0";
   142   val SOME (t,_) = 
   143       rewrite_set_inst_ thy Poly_erls false [("bdv", "a")] make_polynomial_in t;
   144   UnparseC.term t;
   145   "x \<up> 2 + (- 1 * (b * x) + (- 1 * (x * a) + b * a)) = 0";
   146 (* bei Verwendung von "size_of-term" nach MG :*)
   147 (*"x \<up> 2 + (- 1 * (b * x) + (b * a + - 1 * (x * a))) = 0"  !!! *)
   148 
   149   (*wir holen 'a' wieder aus der Klammerung heraus...*)
   150   val SOME (t,_) = rewrite_set_ thy Poly_erls false discard_parentheses t;
   151   UnparseC.term t;
   152    "x \<up> 2 + - 1 * b * x + - 1 * x * a + b * a = 0";
   153 (* "x \<up> 2 + - 1 * b * x + b * a + - 1 * x * a = 0" !!! *)
   154 
   155   val SOME (t,_) =
   156       rewrite_set_inst_ thy Poly_erls false [("bdv", "a")] make_polynomial_in t;
   157   UnparseC.term t;
   158   "x \<up> 2 + (- 1 * (b * x) + a * (b + - 1 * x)) = 0"; 
   159   (*da sind wir fast am Ziel: make_polynomial_in 'a' sollte ergeben
   160   "x \<up> 2 + (- 1 * (b * x)) + (b + - 1 * x) * a = 0"*)
   161 
   162   (*das rewriting l"asst sich beobachten mit
   163 Rewrite.trace_on := false; (*true false*)
   164   *)
   165 
   166 "------ 15.11.02 --------------------------";
   167   val t = TermC.parseNEW' ctxt "1 + a * x + b * x";
   168   val bdv = TermC.parseNEW' ctxt "bdv";
   169   val a = TermC.parseNEW' ctxt "a";
   170  
   171 Rewrite.trace_on := false; (*true false*)
   172  (* Anwenden einer Regelmenge aus Termorder.ML: *)
   173  val SOME (t,_) =
   174      rewrite_set_inst_ thy false [(bdv,a)] make_polynomial_in t;
   175  UnparseC.term t;
   176  val SOME (t,_) =
   177      rewrite_set_ thy false discard_parentheses t;
   178  UnparseC.term t;
   179 "1 + b * x + x * a";
   180 
   181  val t = TermC.parseNEW' ctxt "1 + a * (x + b * x) + a \<up> 2";
   182  val SOME (t,_) =
   183      rewrite_set_inst_ thy false [(bdv,a)] make_polynomial_in t;
   184  UnparseC.term t;
   185  val SOME (t,_) =
   186      rewrite_set_ thy false discard_parentheses t;
   187  UnparseC.term t;
   188 "1 + (x + b * x) * a + a \<up> 2";
   189 
   190  val t = TermC.parseNEW' ctxt "1 + a  \<up> 2 * x + b * a + 7*a \<up> 2";
   191  val SOME (t,_) =
   192      rewrite_set_inst_ thy false [(bdv,a)] make_polynomial_in t;
   193  UnparseC.term t;
   194  val SOME (t,_) =
   195      rewrite_set_ thy false discard_parentheses t;
   196  UnparseC.term t;
   197 "1 + b * a + (7 + x) * a \<up> 2";
   198 
   199 (* MG2003
   200  Prog_Expr.thy       grundlegende Algebra
   201  Poly.thy         Polynome
   202  Rational.thy     Br"uche
   203  Root.thy         Wurzeln
   204  RootRat.thy      Wurzen + Br"uche
   205  Termorder.thy    BITTE NUR HIERHER SCHREIBEN (...WN03)
   206 
   207  get_thm Termorder.thy "bdv_n_collect";
   208  get_thm (theory "Isac_Knowledge") "bdv_n_collect";
   209 *)
   210  val t = TermC.parseNEW' ctxt "a  \<up> 2 * x + 7 * a \<up> 2";
   211  val SOME (t,_) =
   212      rewrite_set_inst_ thy false [(bdv,a)] make_polynomial_in t;
   213  UnparseC.term t;
   214  val SOME (t,_) =
   215      rewrite_set_ thy false discard_parentheses t;
   216  UnparseC.term t;
   217 "(7 + x) * a \<up> 2";
   218 
   219  val t = (Thm.term_of o the o (TermC.parse Termorder.thy)) "Pi";
   220 
   221  val t = (Thm.term_of o the o (parseold thy)) "7";
   222 ##################################################################################*)
   223 
   224 
   225 "----------- open local of fun ord_make_polynomial_in ------------------------------------------";
   226 "----------- open local of fun ord_make_polynomial_in ------------------------------------------";
   227 "----------- open local of fun ord_make_polynomial_in ------------------------------------------";
   228 (* termorder hacked by MG, adapted later by WN *)
   229 (** )local ( *. for make_polynomial_in .*)
   230 
   231 open Term;  (* for type order = EQUAL | LESS | GREATER *)
   232 
   233 fun pr_ord EQUAL = "EQUAL"
   234   | pr_ord LESS  = "LESS"
   235   | pr_ord GREATER = "GREATER";
   236 
   237 fun dest_hd' _ (Const (a, T)) = (((a, 0), T), 0)
   238   | dest_hd' x (t as Free (a, T)) =
   239     if x = t then ((("|||||||||||||", 0), T), 0)                        (*WN*)
   240     else (((a, 0), T), 1)
   241   | dest_hd' _ (Var v) = (v, 2)
   242   | dest_hd' _ (Bound i) = ((("", i), dummyT), 3)
   243   | dest_hd' _ (Abs (_, T, _)) = ((("", 0), T), 4)
   244   | dest_hd' _ _ = raise ERROR "dest_hd': uncovered case in fun.def.";
   245 
   246 fun size_of_term' i pr x (t as Const (\<^const_name>\<open>realpow\<close>, _) $ 
   247       Free (var, _) $ Free (pot, _)) =
   248     (if pr then tracing (idt "#" i ^ "size_of_term' realpow: " ^ UnparseC.term t) else ();
   249     case x of                                                          (*WN*)
   250 	    (Free (xstr, _)) => 
   251 		    if xstr = var 
   252         then (if pr then tracing (idt "#" i ^ "xstr = var --> " ^ string_of_int (1000 * (the (TermC.int_opt_of_string pot)))) else ();
   253           1000 * (the (TermC.int_opt_of_string pot)))
   254         else (if pr then tracing (idt "#" i ^ "x <> Free  --> " ^ "3") else (); 3)
   255 	  | _ => raise ERROR ("size_of_term' called with subst = " ^ UnparseC.term x))
   256   | size_of_term' i pr x (t as Abs (_, _, body)) =
   257     (if pr then tracing (idt "#" i ^ "size_of_term' Abs: " ^ UnparseC.term t) else ();
   258     1 + size_of_term' (i + 1) pr x body)
   259   | size_of_term' i pr x (f $ t) =
   260     let
   261       val _ = if pr then tracing (idt "#" i ^ "size_of_term' $$$: " ^ UnparseC.term f ^ " $$$ " ^ UnparseC.term t) else ();
   262       val s1 = size_of_term' (i + 1) pr x f
   263       val s2 = size_of_term' (i + 1) pr x t
   264       val _ = if pr then tracing (idt "#" i ^ "size_of_term' $$$-->: " ^ string_of_int s1 ^ " + " ^ string_of_int s2 ^ " = " ^ string_of_int(s1 + s2)) else ();
   265     in (s1 + s2) end
   266   | size_of_term' i pr x t =
   267     (if pr then tracing (idt "#" i ^ "size_of_term' bot: " ^ UnparseC.term t) else ();
   268     case t of
   269       Free (subst, _) => 
   270        (case x of
   271    	     Free (xstr, _) =>
   272             if xstr = subst
   273             then (if pr then tracing (idt "#" i ^ "xstr = var --> " ^ "1000") else (); 1000)
   274             else (if pr then tracing (idt "#" i ^ "x <> Free  --> " ^ "1") else (); 1)
   275    	   | _ => raise ERROR ("size_of_term' called with subst = " ^ UnparseC.term x))
   276      | _ => (if pr then tracing (idt "#" i ^ "bot        --> " ^ "1") else (); 1));
   277 
   278 fun term_ord' i pr x thy (Abs (_, T, t), Abs(_, U, u)) =       (* ~ term.ML *)
   279     let
   280       val _ = if pr then tracing (idt "#" i ^ "term_ord' Abs") else ();
   281       val ord =
   282         case term_ord' (i + 1) pr x thy (t, u) of EQUAL => Term_Ord.typ_ord (T, U) | ord => ord
   283       val _  = if pr then tracing (idt "#" i ^ "term_ord' Abs --> " ^ pr_ord ord) else ()
   284     in ord end
   285   | term_ord' i pr x _ (t, u) =
   286     let
   287       val _ = if pr then tracing (idt "#" i ^ "term_ord' bot (" ^ UnparseC.term t ^ ", " ^ UnparseC.term u ^ ")") else ();
   288       val ord =
   289     	  case int_ord (size_of_term' (i + 1) pr x t, size_of_term' (i + 1) pr x u) of
   290     	    EQUAL =>
   291     	      let val (f, ts) = strip_comb t and (g, us) = strip_comb u 
   292             in
   293     	        (case hd_ord (i + 1) pr x (f, g) of 
   294     	           EQUAL => (terms_ord x (i + 1) pr) (ts, us) 
   295     	         | ord => ord)
   296     	      end
   297     	  | ord => ord
   298       val _  = if pr then tracing (idt "#" i ^ "term_ord' bot --> " ^ pr_ord ord) else ()
   299     in ord end
   300 and hd_ord i pr x (f, g) =                                        (* ~ term.ML *)
   301     let
   302       val _ = if pr then tracing (idt "#" i ^ "hd_ord (" ^ UnparseC.term f ^ ", " ^ UnparseC.term g ^ ")") else ();
   303       val ord = prod_ord
   304         (prod_ord Term_Ord.indexname_ord Term_Ord.typ_ord) int_ord
   305           (dest_hd' x f, dest_hd' x g)
   306       val _ = if pr then tracing (idt "#" i ^ "hd_ord --> " ^ pr_ord ord) else ();
   307     in ord end
   308 and terms_ord x i pr (ts, us) = 
   309     let
   310       val _ = if pr then tracing (idt "#" i ^ "terms_ord (" ^ UnparseC.terms ts ^ ", " ^ UnparseC.terms us ^ ")") else ();
   311       val ord = list_ord (term_ord' (i + 1) pr x (ThyC.get_theory "Isac_Knowledge"))(ts, us);
   312       val _ = if pr then tracing (idt "#" i ^ "terms_ord --> " ^ pr_ord ord) else ();
   313     in ord end
   314 
   315 (** )in( *local*)
   316 
   317 fun ord_make_polynomial_in (pr:bool) thy subst (ts, us) =
   318   ((** )tracing ("*** subs variable is: " ^ Env.subst2str subst); ( **)
   319 	case subst of
   320 	  (_, x) :: _ =>
   321       term_ord' 1 pr x thy (TermC.numerals_to_Free ts, TermC.numerals_to_Free us) = LESS
   322 	| _ => raise ERROR ("ord_make_polynomial_in called with subst = " ^ Env.subst2str subst))
   323 
   324 (** )end;( *local*)
   325 
   326 val subs = [(TermC.str2term "bdv::real", TermC.str2term "x::real")];
   327 if ord_make_polynomial_in false(*true*) @{theory} subs (t1, t2) then ()  else error "still GREATER?";
   328 
   329 val x = TermC.str2term "x ::real";
   330 
   331 val t1 = TermC.numerals_to_Free (TermC.str2term "L * q_0 * x \<up> 2 / 4 ::real");
   332 if 2006 = size_of_term' 1 false(*true*) x t1 
   333 then () else error "size_of_term' (L * q_0 * x \<up> 2) CHANGED)";
   334 
   335 val t2 = TermC.numerals_to_Free (TermC.str2term "- 1 * (q_0 * x \<up> 3) :: real");
   336 if 3004 = size_of_term' 1 false(*true*) x t2
   337 then () else error "size_of_term' (- 1 * (q_0 * x \<up> 3)) CHANGED";
   338 
   339 
   340 "----------- Matthias Goldgruber 2003 trials on rewrite orders -------------------------------";
   341 "----------- Matthias Goldgruber 2003 trials on rewrite orders -------------------------------";
   342 "----------- Matthias Goldgruber 2003 trials on rewrite orders -------------------------------";
   343   val substa = [(TermC.empty, TermC.parseNEW' ctxt "a::real")];
   344   val substb = [(TermC.empty, TermC.parseNEW' ctxt "b::real")];
   345   val substx = [(TermC.empty, TermC.parseNEW' ctxt "x::real")];
   346 
   347   val x1 = TermC.parseNEW' ctxt "a + b + x::real";
   348   val x2 = TermC.parseNEW' ctxt "a + x + b::real";
   349   val x3 = TermC.parseNEW' ctxt "a + x + b::real";
   350   val x4 = TermC.parseNEW' ctxt "x + a + b::real";
   351 
   352 if ord_make_polynomial_in false(*true*) thy substx (x1,x2) = true(*LESS *) then ()
   353 else error "termorder.sml diff.behav ord_make_polynomial_in #1";
   354  
   355 if ord_make_polynomial_in false(*true*) thy substa (x1,x2) = true(*LESS *) then ()
   356 else error "termorder.sml diff.behav ord_make_polynomial_in #2";
   357 
   358 if ord_make_polynomial_in false(*true*) thy substb (x1,x2) = false(*GREATER*) then ()
   359 else error "termorder.sml diff.behav ord_make_polynomial_in #3";
   360 
   361   val aa = TermC.parseNEW' ctxt "- 1 * a * x::real";
   362   val bb = TermC.parseNEW' ctxt "x \<up> 3::real";
   363 if ord_make_polynomial_in false(*true*) thy substx (aa, bb) = true(*LESS *) then ()
   364 else error "termorder.sml diff.behav ord_make_polynomial_in #4";
   365   
   366   val aa = TermC.parseNEW' ctxt "- 1 * a * x";
   367   val bb = TermC.parseNEW' ctxt "x \<up> 3";
   368 if ord_make_polynomial_in false(*true*) thy substa (aa, bb) = false(*GREATER*) then ()
   369 else error "termorder.sml diff.behav ord_make_polynomial_in #5";
   370 
   371 (* und nach dem Re-engineering der Termorders in den 'rulesets' 
   372    kannst Du die 'gr"osste' Variable frei w"ahlen: *)
   373   val bdv= TermC.parseNEW' ctxt "bdv ::real";
   374   val x  = TermC.parseNEW' ctxt "x ::real";
   375   val a  = TermC.parseNEW' ctxt "a ::real";
   376   val b  = TermC.parseNEW' ctxt "b ::real";
   377 val SOME (t',_) = rewrite_set_inst_ ctxt false [(bdv,a)] make_polynomial_in x2;
   378 if UnparseC.term t' = "b + x + a" then ()
   379 else error "termorder.sml diff.behav ord_make_polynomial_in #11";
   380 
   381 val NONE = rewrite_set_inst_ ctxt false [(bdv,b)] make_polynomial_in x2;
   382 
   383 val SOME (t',_) = rewrite_set_inst_ ctxt false [(bdv,x)] make_polynomial_in x2;
   384 if UnparseC.term t' = "a + b + x" then ()
   385 else error "termorder.sml diff.behav ord_make_polynomial_in #13";
   386 
   387   val ppp' = "-6 + -5*x + x \<up> 3 + - 1*x \<up> 2 + - 1*x \<up> 3 + - 14*x \<up> 2";
   388   val ppp  = TermC.parseNEW' ctxt ppp';
   389 val SOME (t', _) = rewrite_set_inst_ ctxt false [(bdv,x)] make_polynomial_in ppp;
   390 if UnparseC.term t' = "- 6 + - 5 * x + - 15 * x \<up> 2" then ()
   391 else error "termorder.sml diff.behav ord_make_polynomial_in #15";
   392 
   393   val ttt' = "(3*x + 5)/18 ::real";
   394   val ttt = TermC.parseNEW' ctxt ttt';
   395 val SOME (uuu,_) = rewrite_set_inst_ ctxt false [(bdv,x)] make_polynomial_in ttt;
   396 if UnparseC.term uuu = "(5 + 3 * x) / 18" then ()
   397 else error "termorder.sml diff.behav ord_make_polynomial_in #16a";
   398 
   399 val SOME (uuu,_) = rewrite_set_ ctxt false make_polynomial ttt;
   400 if UnparseC.term uuu = "(5 + 3 * x) / 18" then ()
   401 else error "termorder.sml diff.behav ord_make_polynomial_in #16b";
   402 
   403 "----------- lin.eq degree_0 -------------------------------------";
   404 "----------- lin.eq degree_0 -------------------------------------";
   405 "----------- lin.eq degree_0 -------------------------------------";
   406 "----- d0_false ------";
   407 val fmz = ["equality (1 = (0::real))", "solveFor x", "solutions L"];
   408 val (dI',pI',mI') = ("PolyEq",["degree_0", "polynomial", "univariate", "equation"],
   409                      ["PolyEq", "solve_d0_polyeq_equation"]);
   410 (*=== inhibit exn WN110914: declare_constraints doesnt work with ThmC.numerals_to_Free ========
   411 TODO: change to "equality (x + - 1*x = (0::real))"
   412       and search for an appropriate problem and method.
   413 
   414 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   415 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   416 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   417 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   418 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   419 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   420 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   421 case f of Form' (Test_Out.FormKF (~1,EdUndef,0,Nundef,"[]")) => ()
   422 	 | _ => error "polyeq.sml: diff.behav. in 1 = 0 -> []";
   423 
   424 "----- d0_true ------";
   425 val fmz = ["equality (0 = (0::real))", "solveFor x", "solutions L"];
   426 val (dI',pI',mI') = ("PolyEq",["degree_0", "polynomial", "univariate", "equation"],
   427                      ["PolyEq", "solve_d0_polyeq_equation"]);
   428 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   429 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   430 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   431 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   432 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   433 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   434 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   435 case f of Form' (Test_Out.FormKF (~1,EdUndef,0,Nundef,"UniversalList")) => ()
   436 	 | _ => error "polyeq.sml: diff.behav. in 0 = 0 -> UniversalList";
   437 ============ inhibit exn WN110914 ============================================*)
   438 
   439 "----------- test thm's d2_pq_formulsxx[_neg]---------------------";
   440 "----------- test thm's d2_pq_formulsxx[_neg]---------------------";
   441 "----------- test thm's d2_pq_formulsxx[_neg]---------------------";
   442 "----- d2_pqformula1 ------!!!!";
   443 val fmz = ["equality (- 1/8 + (- 1/4)*z + z \<up> 2 = (0::real))", "solveFor z", "solutions L"];
   444 val (dI',pI',mI') =
   445   ("Isac_Knowledge", ["pqFormula", "degree_2", "polynomial", "univariate", "equation"], ["no_met"]);
   446 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   447 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   448 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   449 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   450 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   451 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   452 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   453 val (p,_,f,nxt,_,pt) = me nxt p [] pt; (*Apply_Method ["PolyEq", "solve_d2_polyeq_pq_equation"]*)
   454 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   455 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   456 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   457 val (p,_,f,nxt,_,pt) = me nxt p [] pt;         
   458 
   459 (*[z = 1 / 8 + sqrt (9 / 16) / 2, z = 1 / 8 + - 1 * sqrt (9 / 16) / 2] TODO sqrt*)
   460 val (p,_,f,nxt,_,pt) = me nxt p [] pt; (*nxt =..,Check_elementwise "Assumptions")*)
   461 val (p,_,f,nxt,_,pt) = me nxt p [] pt;         
   462 val (p,_,f,nxt,_,pt) = me nxt p [] pt;         
   463 
   464 if p = ([], Res) andalso
   465   f2str f = "[z = 1 / 8 + sqrt (9 / 16) / 2, z = 1 / 8 + - 1 * sqrt (9 / 16) / 2]" then
   466     case nxt of End_Proof' => () | _ => error "(- 1/8 + (- 1/4)*z + z \<up> 2 = (0::real)) CHANGED 1"
   467 else error "(- 1/8 + (- 1/4)*z + z \<up> 2 = (0::real)) CHANGED 2";
   468 
   469 "----------- equality (2 +(- 1)*x + x \<up> 2 = (0::real)) ----------------------------------------";
   470 "----------- equality (2 +(- 1)*x + x \<up> 2 = (0::real)) ----------------------------------------";
   471 "----------- equality (2 +(- 1)*x + x \<up> 2 = (0::real)) ----------------------------------------";
   472 "----- d2_pqformula1_neg ------";
   473 val fmz = ["equality (2 +(- 1)*x + x \<up> 2 = (0::real))", "solveFor x", "solutions L"];
   474 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"], ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   475 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   476 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   477 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   478 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   479 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   480 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   481 (*### or2list False
   482   ([1],Res)  False   Or_to_List)*)
   483 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   484 (*### or2list False                           
   485   ([2],Res)  []      Check_elementwise "Assumptions"*)
   486 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   487 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   488 val asm = Ctree.get_assumptions pt p;
   489 if f2str f = "[]" andalso 
   490   UnparseC.terms asm = "[\"lhs (2 + - 1 * x + x \<up> 2 = 0) is_poly_in x\", " ^
   491     "\"lhs (2 + - 1 * x + x \<up> 2 = 0) has_degree_in x = 2\"]" then ()
   492 else error "polyeq.sml: diff.behav. in 2 +(- 1)*x + x \<up> 2 = 0";
   493 
   494 "----------- equality (- 2 +(- 1)*x + 1*x \<up> 2 = 0) ---------------------------------------------";
   495 "----------- equality (- 2 +(- 1)*x + 1*x \<up> 2 = 0) ---------------------------------------------";
   496 "----------- equality (- 2 +(- 1)*x + 1*x \<up> 2 = 0) ---------------------------------------------";
   497 "----- d2_pqformula2 ------";
   498 val fmz = ["equality (- 2 +(- 1)*x + 1*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   499 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   500                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   501 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   502 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   503 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   504 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   505 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   506 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   507 
   508 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   509 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   510 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   511 case f of Test_Out.FormKF "[x = 2, x = - 1]" => ()
   512 	 | _ => error "polyeq.sml: diff.behav. in - 2 + (- 1)*x + x^2 = 0 -> [x = 2, x = - 1]";
   513 
   514 
   515 "----------- equality (- 2 + x + x \<up> 2 = 0) ---------------------------------------------------";
   516 "----------- equality (- 2 + x + x \<up> 2 = 0) ---------------------------------------------------";
   517 "----------- equality (- 2 + x + x \<up> 2 = 0) ---------------------------------------------------";
   518 "----- d2_pqformula3 ------";
   519 (*EP-9*)
   520 val fmz = ["equality (- 2 + x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   521 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   522                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   523 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   524 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   525 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   526 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   527 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   528 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   529 
   530 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   531 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   532 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   533 case f of Test_Out.FormKF "[x = 1, x = - 2]" => ()
   534 	 | _ => error "polyeq.sml: diff.behav. in  - 2 + x + x^2 = 0-> [x = 1, x = - 2]";
   535 
   536 
   537 "----------- equality (2 + x + x \<up> 2 = 0) ----------------------------------------------------";
   538 "----------- equality (2 + x + x \<up> 2 = 0) ----------------------------------------------------";
   539 "----------- equality (2 + x + x \<up> 2 = 0) ----------------------------------------------------";
   540 "----- d2_pqformula3_neg ------";
   541 val fmz = ["equality (2 + x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   542 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   543                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   544 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   545 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   546 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   547 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   548 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   549 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   550 
   551 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   552 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   553 "TODO 2 + x + x \<up> 2 = 0";
   554 "TODO 2 + x + x \<up> 2 = 0";
   555 "TODO 2 + x + x \<up> 2 = 0";
   556 
   557 "----------- equality (- 2 + x + 1*x \<up> 2 = 0)) ------------------------------------------------";
   558 "----------- equality (- 2 + x + 1*x \<up> 2 = 0)) ------------------------------------------------";
   559 "----------- equality (- 2 + x + 1*x \<up> 2 = 0)) ------------------------------------------------";
   560 "----- d2_pqformula4 ------";
   561 val fmz = ["equality (- 2 + x + 1*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   562 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   563                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   564 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   565 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   566 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   567 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   568 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   569 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   570 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   571 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   572 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   573 case f of Test_Out.FormKF "[x = 1, x = - 2]" => ()
   574 	 | _ => error "polyeq.sml: diff.behav. in  - 2 + x + 1*x \<up> 2 = 0 -> [x = 1, x = - 2]";
   575 
   576 "----------- equality (1*x +   x \<up> 2 = 0) ----------------------------------------------------";
   577 "----------- equality (1*x +   x \<up> 2 = 0) ----------------------------------------------------";
   578 "----------- equality (1*x +   x \<up> 2 = 0) ----------------------------------------------------";
   579 "----- d2_pqformula5 ------";
   580 val fmz = ["equality (1*x +   x \<up> 2 = 0)", "solveFor x", "solutions L"];
   581 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   582                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   583 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   584 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   585 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   586 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   587 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   588 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   589 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   590 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   591 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   592 case f of Test_Out.FormKF "[x = 0, x = - 1]" => ()
   593 	 | _ => error "polyeq.sml: diff.behav. in  1*x +   x^2 = 0 -> [x = 0, x = - 1]";
   594 
   595 "----------- equality (1*x + 1*x \<up> 2 = 0) ----------------------------------------------------";
   596 "----------- equality (1*x + 1*x \<up> 2 = 0) ----------------------------------------------------";
   597 "----------- equality (1*x + 1*x \<up> 2 = 0) ----------------------------------------------------";
   598 "----- d2_pqformula6 ------";
   599 val fmz = ["equality (1*x + 1*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   600 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   601                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   602 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   603 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   604 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   605 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   606 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   607 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   608 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   609 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   610 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   611 case f of Test_Out.FormKF "[x = 0, x = - 1]" => ()
   612 	 | _ => error "polyeq.sml: diff.behav. in  1*x + 1*x^2 = 0 -> [x = 0, x = - 1]";
   613 
   614 "----------- equality (x +   x \<up> 2 = 0) ------------------------------------------------------";
   615 "----------- equality (x +   x \<up> 2 = 0) ------------------------------------------------------";
   616 "----------- equality (x +   x \<up> 2 = 0) ------------------------------------------------------";
   617 "----- d2_pqformula7 ------";
   618 (*EP- 10*)
   619 val fmz = ["equality (  x +   x \<up> 2 = 0)", "solveFor x", "solutions L"];
   620 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   621                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   622 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   623 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   624 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   625 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   626 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   627 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   628 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   629 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   630 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   631 case f of Test_Out.FormKF "[x = 0, x = - 1]" => ()
   632 	 | _ => error "polyeq.sml: diff.behav. in  x + x^2 = 0 -> [x = 0, x = - 1]";
   633 
   634 "----------- equality (x + 1*x \<up> 2 = 0) ------------------------------------------------------";
   635 "----------- equality (x + 1*x \<up> 2 = 0) ------------------------------------------------------";
   636 "----------- equality (x + 1*x \<up> 2 = 0) ------------------------------------------------------";
   637 "----- d2_pqformula8 ------";
   638 val fmz = ["equality (x + 1*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   639 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   640                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   641 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   642 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   643 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   644 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   645 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   646 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   647 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   648 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   649 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   650 case f of Test_Out.FormKF "[x = 0, x = - 1]" => ()
   651 	 | _ => error "polyeq.sml: diff.behav. in  x + 1*x^2 = 0 -> [x = 0, x = - 1]";
   652 
   653 "----------- equality (-4 + x \<up> 2 = 0) -------------------------------------------------------";
   654 "----------- equality (-4 + x \<up> 2 = 0) -------------------------------------------------------";
   655 "----------- equality (-4 + x \<up> 2 = 0) -------------------------------------------------------";
   656 "----- d2_pqformula9 ------";
   657 val fmz = ["equality (-4 + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   658 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   659                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   660 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   661 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   662 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   663 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   664 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   665 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   666 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   667 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   668 case f of Test_Out.FormKF "[x = 2, x = - 2]" => ()
   669 	 | _ => error "polyeq.sml: diff.behav. in -4 + x^2 = 0 -> [x = 2, x = - 2]";
   670 
   671 
   672 "----------- equality (4 + 1*x \<up> 2 = 0) -------------------------------------------------------";
   673 "----------- equality (4 + 1*x \<up> 2 = 0) -------------------------------------------------------";
   674 "----------- equality (4 + 1*x \<up> 2 = 0) -------------------------------------------------------";
   675 "----- d2_pqformula9_neg ------";
   676 val fmz = ["equality (4 + 1*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   677 val (dI',pI',mI') = ("PolyEq",["pqFormula", "degree_2", "polynomial", "univariate", "equation"],
   678                      ["PolyEq", "solve_d2_polyeq_pq_equation"]);
   679 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   680 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   681 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   682 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   683 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   684 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   685 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   686 "TODO 4 + 1*x \<up> 2 = 0";
   687 "TODO 4 + 1*x \<up> 2 = 0";
   688 "TODO 4 + 1*x \<up> 2 = 0";
   689 
   690 "-------------------- test thm's d2_abc_formulsxx[_neg]-----";
   691 "-------------------- test thm's d2_abc_formulsxx[_neg]-----";
   692 "-------------------- test thm's d2_abc_formulsxx[_neg]-----";
   693 val fmz = ["equality (- 1 +(- 1)*x + 2*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   694 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   695                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   696 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   697 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   698 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   699 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   700 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   701 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   702 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   703 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   704 case f of Test_Out.FormKF "[x = 1, x = - 1 / 2]" => ()
   705 	 | _ => error "polyeq.sml: diff.behav. in - 1 + (- 1)*x + 2*x^2 = 0 -> [x = 1, x = - 1/2]";
   706 
   707 "----------- equality (1 +(- 1)*x + 2*x \<up> 2 = 0) ----------------------------------------------";
   708 "----------- equality (1 +(- 1)*x + 2*x \<up> 2 = 0) ----------------------------------------------";
   709 "----------- equality (1 +(- 1)*x + 2*x \<up> 2 = 0) ----------------------------------------------";
   710 val fmz = ["equality (1 +(- 1)*x + 2*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   711 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   712                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   713 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   714 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   715 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   716 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   717 
   718 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   719 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   720 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   721 "TODO 1 +(- 1)*x + 2*x \<up> 2 = 0";
   722 "TODO 1 +(- 1)*x + 2*x \<up> 2 = 0";
   723 "TODO 1 +(- 1)*x + 2*x \<up> 2 = 0";
   724 
   725 
   726 "----------- equality (- 1 + x + 2*x \<up> 2 = 0) -------------------------------------------------";
   727 "----------- equality (- 1 + x + 2*x \<up> 2 = 0) -------------------------------------------------";
   728 "----------- equality (- 1 + x + 2*x \<up> 2 = 0) -------------------------------------------------";
   729 (*EP- 11*)
   730 val fmz = ["equality (- 1 + x + 2*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   731 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   732                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   733 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   734 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   735 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   736 
   737 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   738 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   739 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   740 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   741 
   742 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   743 case f of Test_Out.FormKF "[x = 1 / 2, x = - 1]" => ()
   744 	 | _ => error "polyeq.sml: diff.behav. in - 1 + x + 2*x^2 = 0 -> [x = 1/2, x = - 1]";
   745 
   746 
   747 "----------- equality (1 + x + 2*x \<up> 2 = 0) --------------------------------------------------";
   748 "----------- equality (1 + x + 2*x \<up> 2 = 0) --------------------------------------------------";
   749 "----------- equality (1 + x + 2*x \<up> 2 = 0) --------------------------------------------------";
   750 val fmz = ["equality (1 + x + 2*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   751 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   752                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   753 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   754 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   755 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   756 
   757 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   758 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   759 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   760 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   761 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   762 "TODO 1 + x + 2*x \<up> 2 = 0";
   763 "TODO 1 + x + 2*x \<up> 2 = 0";
   764 "TODO 1 + x + 2*x \<up> 2 = 0";
   765 
   766 
   767 val fmz = ["equality (- 2 + 1*x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   768 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   769                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   770 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   771 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   772 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   773 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   774 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   775 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   776 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   777 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   778 case f of Test_Out.FormKF "[x = 1, x = - 2]" => ()
   779 	 | _ => error "polyeq.sml: diff.behav. in - 2 + 1*x + x^2 = 0 -> [x = 1, x = - 2]";
   780 
   781 val fmz = ["equality ( 2 + 1*x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   782 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   783                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   784 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   785 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   786 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   787 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   788 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   789 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   790 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   791 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   792 "TODO 2 + 1*x + x \<up> 2 = 0";
   793 "TODO 2 + 1*x + x \<up> 2 = 0";
   794 "TODO 2 + 1*x + x \<up> 2 = 0";
   795 
   796 (*EP- 12*)
   797 val fmz = ["equality (- 2 + x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   798 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   799                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   800 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   801 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   802 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   803 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   804 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   805 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   806 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   807 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   808 case f of Test_Out.FormKF "[x = 1, x = - 2]" => ()
   809 	 | _ => error "polyeq.sml: diff.behav. in - 2 + x + x^2 = 0 -> [x = 1, x = - 2]";
   810 
   811 val fmz = ["equality ( 2 + x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   812 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   813                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   814 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   815 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   816 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   817 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   818 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   819 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   820 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   821 val (p,_,f,nxt,_,pt) = me nxt p [] pt; 
   822 "TODO 2 + x + x \<up> 2 = 0";
   823 "TODO 2 + x + x \<up> 2 = 0";
   824 "TODO 2 + x + x \<up> 2 = 0";
   825 
   826 (*EP- 13*)
   827 val fmz = ["equality (-8 + 2*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   828 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   829                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   830 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   831 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   832 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   833 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   834 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   835 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   836 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   837 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   838 case f of Test_Out.FormKF "[x = 2, x = - 2]" => ()
   839 	 | _ => error "polyeq.sml: diff.behav. in -8 + 2*x^2 = 0 -> [x = 2, x = - 2]";
   840 
   841 val fmz = ["equality ( 8+ 2*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   842 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   843                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   844 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   845 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   846 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   847 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   848 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   849 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   850 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   851 "TODO 8+ 2*x \<up> 2 = 0";
   852 "TODO 8+ 2*x \<up> 2 = 0";
   853 "TODO 8+ 2*x \<up> 2 = 0";
   854 
   855 (*EP- 14*)
   856 val fmz = ["equality (-4 + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   857 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"], ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   858 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   859 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   860 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   861 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   862 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   863 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   864 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   865 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   866 case f of Test_Out.FormKF "[x = 2, x = - 2]" => ()
   867 	 | _ => error "polyeq.sml: diff.behav. in -4 + x^2 = 0 -> [x = 2, x = - 2]";
   868 
   869 
   870 val fmz = ["equality ( 4+ x \<up> 2 = 0)", "solveFor x", "solutions L"];
   871 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"], ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   872 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   873 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   874 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   875 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   876 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   877 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   878 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   879 "TODO 4+ x \<up> 2 = 0";
   880 "TODO 4+ x \<up> 2 = 0";
   881 "TODO 4+ x \<up> 2 = 0";
   882 
   883 (*EP- 15*)
   884 val fmz = ["equality (2*x + 2*x \<up> 2 = 0)", "solveFor x", "solutions L"];
   885 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   886                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   887 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   888 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   889 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   890 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   891 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   892 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   893 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   894 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   895 case f of Test_Out.FormKF "[x = 0, x = - 1]" => ()
   896 	 | _ => error "polyeq.sml: diff.behav. in x + x^2 = 0 -> [x = 0, x = - 1]";
   897 
   898 val fmz = ["equality (1*x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   899 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   900                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   901 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   902 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   903 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   904 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   905 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   906 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   907 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   908 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   909 case f of Test_Out.FormKF "[x = 0, x = - 1]" => ()
   910 	 | _ => error "polyeq.sml: diff.behav. in x + x^2 = 0 -> [x = 0, x = - 1]";
   911 
   912 (*EP- 16*)
   913 val fmz = ["equality (x + 2 * x \<up> 2 = (0::real))", "solveFor (x::real)", "solutions L"];
   914 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   915                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   916 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   917 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   918 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   919 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   920 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   921 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   922 
   923 (*+*)val Test_Out.FormKF "x + 2 * x \<up> 2 = 0" = f;
   924 (*+*)val Rewrite_Set_Inst (["(''bdv'', x)"], "d2_polyeq_abcFormula_simplify") = nxt
   925 
   926 val (p,_,f,nxt,_,pt) = me nxt p [] pt; (*"x + 2 * x \<up> 2 = 0", d2_polyeq_abcFormula_simplify*)
   927 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   928 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   929 case f of Test_Out.FormKF "[x = 0, x = - 1 / 2]" => ()
   930 	 | _ => error "polyeq.sml: diff.behav. in x + x^2 = 0 -> [x = 0, x = - 1 / 2]";
   931 
   932 (*EP-//*)
   933 val fmz = ["equality (x + x \<up> 2 = 0)", "solveFor x", "solutions L"];
   934 val (dI',pI',mI') = ("PolyEq",["abcFormula", "degree_2", "polynomial", "univariate", "equation"],
   935                      ["PolyEq", "solve_d2_polyeq_abc_equation"]);
   936 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   937 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   938 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   939 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   940 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   941 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   942 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   943 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   944 case f of Test_Out.FormKF "[x = 0, x = - 1]" => ()
   945 	 | _ => error "polyeq.sml: diff.behav. in x + x^2 = 0 -> [x = 0, x = - 1]";
   946 
   947 
   948 "----------- (-8 - 2*x + x \<up> 2 = 0),  (*Schalk 2, S.67 Nr.31.b----";
   949 "----------- (-8 - 2*x + x \<up> 2 = 0),  (*Schalk 2, S.67 Nr.31.b----";
   950 "----------- (-8 - 2*x + x \<up> 2 = 0),  (*Schalk 2, S.67 Nr.31.b----";
   951 (*stopped du to TODO.txt WN111014.TODO calculate_Poly < calculate_Rational < calculate_RootRat
   952 see --- val rls = calculate_RootRat > calculate_Rational ---
   953 calculate_RootRat was a TODO with 2002, requires re-design.
   954 see also --- (-8 - 2*x + x \<up> 2 = 0),  by rewriting --- below
   955 *)
   956  val fmz = ["equality (-8 - 2*x + x \<up> 2 = 0)", (*Schalk 2, S.67 Nr.31.b*)
   957  	    "solveFor x", "solutions L"];
   958  val (dI',pI',mI') =
   959      ("PolyEq",["degree_2", "expanded", "univariate", "equation"],
   960       ["PolyEq", "complete_square"]);
   961 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
   962 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   963 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   964 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   965 
   966 val (p,_,f,nxt,_,pt) = me nxt p [] pt; val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   967 (*Apply_Method ("PolyEq", "complete_square")*)
   968 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   969 (*"-8 - 2 * x + x \<up> 2 = 0", nxt = Rewrite_Set_Inst ... "complete_square*)
   970 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   971 (*"-8 + (2 / 2 - x) \<up> 2 = (2 / 2) \<up> 2", nxt = Rewrite("square_explicit1"*)
   972 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   973 (*"(2 / 2 - x) \<up> 2 = (2 / 2) \<up> 2 - -8" nxt = Rewrite("root_plus_minus*)
   974 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   975 (*"2 / 2 - x = sqrt ((2 / 2) \<up> 2 - -8) |
   976    2 / 2 - x = - sqrt ((2 / 2) \<up> 2 - -8)" nxt = Rewr_Inst("bdv_explicit2"*)
   977 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   978 (*"2 / 2 - x = sqrt ((2 / 2) \<up> 2 - -8) |
   979    - 1*x = - (2 / 2) + - sqrt ((2 / 2) \<up> 2 - -8)"nxt = R_Inst("bdv_explt2"*)
   980 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   981 (*"- 1 * x = - (2 / 2) + sqrt ((2 / 2) \<up> 2 - -8) |
   982    - 1 * x = (- (2 / 2) + - sqrt ((2 / 2) \<up> 2 - -8))"nxt = bdv_explicit3*)
   983 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   984 (*"- 1 * x = - (2 / 2) + sqrt ((2 / 2) \<up> 2 - -8) |
   985   x = - 1 * (- (2 / 2) + - sqrt ((2 / 2) \<up> 2 - -8))" nxt = bdv_explicit3*)
   986 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   987 (*"x = - 1 * (- (2 / 2) + sqrt ((2 / 2) \<up> 2 - -8)) |
   988    x = - 1 * (- (2 / 2) + - sqrt ((2 / 2) \<up> 2 - -8))"nxt = calculate_Rational
   989    NOT IMPLEMENTED SINCE 2002 ------------------------------ \<up> \<up> \<up> \<up> \<up>  \<up> *)
   990 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   991 (*"x = - 2 | x = 4" nxt = Or_to_List*)
   992 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
   993 (*"[x = - 2, x = 4]" nxt = Check_Postcond*)
   994 val (p,_,f,nxt,_,pt) = me nxt p [] pt; f2str f;
   995 (* FIXXXME 
   996  case f of Form' (Test_Out.FormKF (~1,EdUndef,0,Nundef,"[x = - 2, x = 4]")) => () TODO
   997 	 | _ => error "polyeq.sml: diff.behav. in [x = - 2, x = 4]";
   998 *)
   999 if f2str f =
  1000    "[x = - 1 * - 1 + - 1 * sqrt (2 \<up> 2 / 2 \<up> 2 - - 8),\n x = - 1 * - 1 + - 1 * (- 1 * sqrt (2 \<up> 2 / 2 \<up> 2 - - 8))]"
  1001 (*"[x = - 1 * - 1 + - 1 * sqrt (1 \<up> 2 - -8),\n x = - 1 * - 1 + - 1 * (- 1 * sqrt (1 \<up> 2 - -8))]"*)
  1002 then () else error "polyeq.sml corrected?behav. in [x = - 2, x = 4]";
  1003 
  1004 
  1005 "----------- (-8 - 2*x + x \<up> 2 = 0),  by rewriting ---------------";
  1006 "----------- (-8 - 2*x + x \<up> 2 = 0),  by rewriting ---------------";
  1007 "----------- (-8 - 2*x + x \<up> 2 = 0),  by rewriting ---------------";
  1008 (*stopped due to TODO.txt WN111014.TODO calculate_Poly < calculate_Rational < calculate_RootRat
  1009 see --- val rls = calculate_RootRat > calculate_Rational ---*)
  1010 val thy = @{theory PolyEq};
  1011 val ctxt = Proof_Context.init_global thy;
  1012 val inst = [((the o (parseNEW  ctxt)) "bdv::real", (the o (parseNEW  ctxt)) "x::real")];
  1013 val t = (the o (parseNEW  ctxt)) "-8 - 2*x + x \<up> 2 = (0::real)";
  1014 
  1015 val rls = complete_square;
  1016 val SOME (t,asm) = rewrite_set_inst_ ctxt true inst rls t;
  1017 if UnparseC.term t = "- 8 + (2 / 2 - x) \<up> 2 = (2 / 2) \<up> 2"
  1018 then () else error "rls complete_square CHANGED";
  1019 
  1020 val thm = @{thm square_explicit1};
  1021 val SOME (t,asm) = rewrite_ ctxt Rewrite_Ord.function_empty Rule_Set.Empty true thm t;
  1022 if UnparseC.term t = "(2 / 2 - x) \<up> 2 = (2 / 2) \<up> 2 - - 8"
  1023 then () else error "thm square_explicit1 CHANGED";
  1024 
  1025 val thm = @{thm root_plus_minus};
  1026 val SOME (t,asm) = rewrite_ ctxt Rewrite_Ord.function_empty PolyEq_erls true thm t;
  1027 if UnparseC.term t =
  1028 "2 / 2 - x = sqrt ((2 / 2) \<up> 2 - - 8) \<or>\n2 / 2 - x = - 1 * sqrt ((2 / 2) \<up> 2 - - 8)"
  1029 then () else error "thm root_plus_minus CHANGED";
  1030 
  1031 (*the thm bdv_explicit2* here required to be constrained to ::real*)
  1032 val thm = @{thm bdv_explicit2};
  1033 val SOME (t,asm) = rewrite_inst_ ctxt Rewrite_Ord.function_empty Rule_Set.Empty true inst thm t;
  1034 if UnparseC.term t =
  1035 "2 / 2 - x = sqrt ((2 / 2) \<up> 2 - - 8) \<or>\n- 1 * x = - (2 / 2) + - 1 * sqrt ((2 / 2) \<up> 2 - - 8)"
  1036 then () else error "thm bdv_explicit2 CHANGED";
  1037 
  1038 val thm = @{thm bdv_explicit3};
  1039 val SOME (t,asm) = rewrite_inst_ ctxt Rewrite_Ord.function_empty Rule_Set.Empty true inst thm t;
  1040 if UnparseC.term t =
  1041 "2 / 2 - x = sqrt ((2 / 2) \<up> 2 - - 8) \<or>\nx = - 1 * (- (2 / 2) + - 1 * sqrt ((2 / 2) \<up> 2 - - 8))"
  1042 then () else error "thm bdv_explicit3 CHANGED";
  1043 
  1044 val thm = @{thm bdv_explicit2};
  1045 val SOME (t,asm) = rewrite_inst_ ctxt Rewrite_Ord.function_empty Rule_Set.Empty true inst thm t;
  1046 if UnparseC.term t =
  1047 "- 1 * x = - (2 / 2) + sqrt ((2 / 2) \<up> 2 - - 8) \<or>\nx = - 1 * (- (2 / 2) + - 1 * sqrt ((2 / 2) \<up> 2 - - 8))"
  1048 then () else error "thm bdv_explicit2 CHANGED";
  1049 
  1050 val rls = calculate_RootRat;
  1051 val SOME (t,asm) = rewrite_set_ ctxt true rls t;
  1052 if UnparseC.term t =
  1053   "- 1 * x = - 1 + sqrt (2 \<up> 2 / 2 \<up> 2 - - 8) \<or>\nx = - 1 * - 1 + - 1 * (- 1 * sqrt (2 \<up> 2 / 2 \<up> 2 - - 8))"
  1054 (*"- 1 * x = - 1 + sqrt (2 \<up> 2 / 2 \<up> 2 - -8) |\nx = - 1 * - 1 + - 1 * (- 1 * sqrt (2 \<up> 2 / 2 \<up> 2 - -8))"..isabisac15*)
  1055 then () else error "(-8 - 2*x + x \<up> 2 = 0),  by rewriting -- ERROR INDICATES IMPROVEMENT";
  1056 (*SHOULD BE: UnparseC.term = "x = - 2 | x = 4;*)
  1057 
  1058 
  1059 "-------------------- (3 - 10*x + 3*x \<up> 2 = 0), ----------------------";
  1060 "-------------------- (3 - 10*x + 3*x \<up> 2 = 0), ----------------------";
  1061 "-------------------- (3 - 10*x + 3*x \<up> 2 = 0), ----------------------";
  1062 "---- test the erls ----";
  1063  val t1 = TermC.parseNEW' ctxt "0 <= (10/3/2) \<up> 2 - 1";
  1064  val SOME (t,_) = rewrite_set_ ctxt false PolyEq_erls t1;
  1065  val t' = UnparseC.term t;
  1066  (*if t'= \<^const_name>\<open>True\<close> then ()
  1067  else error "polyeq.sml: diff.behav. in 'rewrite_set_.. PolyEq_erls";*)
  1068 (* *)
  1069  val fmz = ["equality (3 - 10*x + 3*x \<up> 2 = 0)",
  1070  	    "solveFor x", "solutions L"];
  1071  val (dI',pI',mI') =
  1072      ("PolyEq",["degree_2", "expanded", "univariate", "equation"],
  1073       ["PolyEq", "complete_square"]);
  1074 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
  1075 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1076  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1077  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1078  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1079  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1080  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1081  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1082  (*Apply_Method ("PolyEq", "complete_square")*)
  1083  val (p,_,f,nxt,_,pt) = me nxt p [] pt; f2str f;
  1084 
  1085 "----------- (- 16 + 4*x + 2*x \<up> 2 = 0), --------------------------";
  1086 "----------- (- 16 + 4*x + 2*x \<up> 2 = 0), --------------------------";
  1087 "----------- (- 16 + 4*x + 2*x \<up> 2 = 0), --------------------------";
  1088  val fmz = ["equality (- 16 + 4*x + 2*x \<up> 2 = 0)",
  1089  	    "solveFor x", "solutions L"];
  1090  val (dI',pI',mI') =
  1091      ("PolyEq",["degree_2", "expanded", "univariate", "equation"],
  1092       ["PolyEq", "complete_square"]);
  1093 val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI',pI',mI'))];
  1094 val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1095  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1096  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1097  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1098  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1099  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1100  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1101  (*Apply_Method ("PolyEq", "complete_square")*)
  1102  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1103  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1104  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1105  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1106  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1107  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1108  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1109  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1110  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1111  val (p,_,f,nxt,_,pt) = me nxt p [] pt;
  1112 (* FIXXXXME n1.,
  1113  case f of Form' (Test_Out.FormKF (~1,EdUndef,0,Nundef,"[x = 2, x = -4]")) => () TODO
  1114 	 | _ => error "polyeq.sml: diff.behav. in [x = 2, x = -4]";
  1115 *)
  1116