src/Tools/isac/Knowledge/PolyEq.ML
branchisac-update-Isa09-2
changeset 37947 22235e4dbe5f
parent 37938 f6164be9280d
child 37952 9ddd1000b900
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/Tools/isac/Knowledge/PolyEq.ML	Wed Aug 25 16:20:07 2010 +0200
     1.3 @@ -0,0 +1,1162 @@
     1.4 +(*. (c) by Richard Lang, 2003 .*)
     1.5 +(*   collecting all knowledge for PolynomialEquations
     1.6 +   created by: rlang 
     1.7 +         date: 02.07
     1.8 +   changed by: rlang
     1.9 +   last change by: rlang
    1.10 +             date: 02.11.26
    1.11 +*)
    1.12 +
    1.13 +(* use"Knowledge/PolyEq.ML";
    1.14 +   use"PolyEq.ML";
    1.15 +
    1.16 +   use"ROOT.ML";
    1.17 +   cd"IsacKnowledge";
    1.18 +
    1.19 +   remove_thy"PolyEq";
    1.20 +   use_thy"Knowledge/Isac";
    1.21 +   *)
    1.22 +"******* PolyEq.ML begin *******";
    1.23 +
    1.24 +theory' := overwritel (!theory', [("PolyEq.thy",PolyEq.thy)]);
    1.25 +(*-------------------------functions---------------------*)
    1.26 +(* just for try
    1.27 +local
    1.28 +    fun add0 l d d_  = if (d_+1) < d then  add0 (str2term"0"::l) d (d_+1) else l;
    1.29 +    fun poly2list_ (t as (Const ("op +",_) $ t1 $ (Const ("Atools.pow",_) $ v_ $ Free (d_,_)))) v l d =
    1.30 +	    if (v=v_) 
    1.31 +	    then poly2list_ t1 v (((str2term("1")))::(add0 l d (int_of_str' d_))) (int_of_str' d_)
    1.32 +	    else  t::(add0 l d 0)
    1.33 +      | poly2list_ (t as (Const ("op +",_) $ t1 $ (Const ("op *",_) $ t11 $ 
    1.34 +                                                   (Const ("Atools.pow",_) $ v_ $ Free (d_,_))))) v l d =
    1.35 +	    if (v=v_) 
    1.36 +	    then poly2list_ t1 v (((t11))::(add0 l d (int_of_str' d_))) (int_of_str' d_)
    1.37 +	    else  t::(add0 l d 0)
    1.38 +      | poly2list_ (t as (Const ("op +",_) $ t1 $ (Free (v_ , _)) )) v l d =
    1.39 +	    if (v = (str2term v_)) 
    1.40 +	    then poly2list_ t1 v (((str2term("1")))::(add0 l d 1 )) 1
    1.41 +	    else  t::(add0 l d 0)
    1.42 +      | poly2list_ (t as (Const ("op +",_) $ t1 $ (Const ("op *",_) $ t11 $ (Free (v_,_)) ))) v l d =
    1.43 +	    if (v= (str2term v_)) 
    1.44 +	    then poly2list_ t1 v ( (t11)::(add0 l d 1 )) 1
    1.45 +	    else  t::(add0 l d 0)
    1.46 +      | poly2list_ (t as (Const ("op +",_) $ _ $ _))_ l d = t::(add0 l d 0)
    1.47 +      | poly2list_ (t as (Free (_,_))) _ l d  =  t::(add0 l d 0)
    1.48 +      | poly2list_ t _ l d  = t::(add0 l d 0);
    1.49 +
    1.50 +    fun poly2list t v = poly2list_ t v [] 0;
    1.51 +    fun diffpolylist_ [] _ = []
    1.52 +      | diffpolylist_ (x::xs) d =  (str2term (if term2str(x)="0" 
    1.53 +					      then "0" 
    1.54 +					      else term2str(x)^"*"^str_of_int(d)))::diffpolylist_ xs (d+1);
    1.55 +    fun diffpolylist [] = []
    1.56 +      | diffpolylist (x::xs) = diffpolylist_ xs 1;
    1.57 +	(* diffpolylist(poly2list (str2term "1+ x +3*x^^^3") (str2term "x"));*)
    1.58 +in
    1.59 +
    1.60 +end;
    1.61 +*)
    1.62 +(*-------------------------rulse-------------------------*)
    1.63 +val PolyEq_prls = (*3.10.02:just the following order due to subterm evaluation*)
    1.64 +  append_rls "PolyEq_prls" e_rls 
    1.65 +	     [Calc ("Atools.ident",eval_ident "#ident_"),
    1.66 +	      Calc ("Tools.matches",eval_matches ""),
    1.67 +	      Calc ("Tools.lhs"    ,eval_lhs ""),
    1.68 +	      Calc ("Tools.rhs"    ,eval_rhs ""),
    1.69 +	      Calc ("Poly.is'_expanded'_in",eval_is_expanded_in ""),
    1.70 +	      Calc ("Poly.is'_poly'_in",eval_is_poly_in ""),
    1.71 +	      Calc ("Poly.has'_degree'_in",eval_has_degree_in ""),    
    1.72 +              Calc ("Poly.is'_polyrat'_in",eval_is_polyrat_in ""),
    1.73 +	      (*Calc ("Atools.occurs'_in",eval_occurs_in ""),   *) 
    1.74 +	      (*Calc ("Atools.is'_const",eval_const "#is_const_"),*)
    1.75 +	      Calc ("op =",eval_equal "#equal_"),
    1.76 +              Calc ("RootEq.is'_rootTerm'_in",eval_is_rootTerm_in ""),
    1.77 +	      Calc ("RatEq.is'_ratequation'_in",eval_is_ratequation_in ""),
    1.78 +	      Thm ("not_true",num_str not_true),
    1.79 +	      Thm ("not_false",num_str not_false),
    1.80 +	      Thm ("and_true",num_str and_true),
    1.81 +	      Thm ("and_false",num_str and_false),
    1.82 +	      Thm ("or_true",num_str or_true),
    1.83 +	      Thm ("or_false",num_str or_false)
    1.84 +	       ];
    1.85 +
    1.86 +val PolyEq_erls = 
    1.87 +    merge_rls "PolyEq_erls" LinEq_erls
    1.88 +    (append_rls "ops_preds" calculate_Rational
    1.89 +		[Calc ("op =",eval_equal "#equal_"),
    1.90 +		 Thm ("plus_leq", num_str plus_leq),
    1.91 +		 Thm ("minus_leq", num_str minus_leq),
    1.92 +		 Thm ("rat_leq1", num_str rat_leq1),
    1.93 +		 Thm ("rat_leq2", num_str rat_leq2),
    1.94 +		 Thm ("rat_leq3", num_str rat_leq3)
    1.95 +		 ]);
    1.96 +
    1.97 +val PolyEq_crls = 
    1.98 +    merge_rls "PolyEq_crls" LinEq_crls
    1.99 +    (append_rls "ops_preds" calculate_Rational
   1.100 +		[Calc ("op =",eval_equal "#equal_"),
   1.101 +		 Thm ("plus_leq", num_str plus_leq),
   1.102 +		 Thm ("minus_leq", num_str minus_leq),
   1.103 +		 Thm ("rat_leq1", num_str rat_leq1),
   1.104 +		 Thm ("rat_leq2", num_str rat_leq2),
   1.105 +		 Thm ("rat_leq3", num_str rat_leq3)
   1.106 +		 ]);
   1.107 +(*------
   1.108 +val PolyEq_erls = 
   1.109 +    merge_rls "PolyEq_erls" 
   1.110 +	      (append_rls "" (Rls {(*asm_thm=[],*)calc=[],
   1.111 +				   erls= Rls {(*asm_thm=[],*)calc=[],
   1.112 +					      erls= Erls,
   1.113 +					      id="e_rls",preconds=[],
   1.114 +					      rew_ord=("dummy_ord",dummy_ord),
   1.115 +					      rules=[Thm ("",
   1.116 +							  num_str ),
   1.117 +						     Thm ("",
   1.118 +							  num_str ),
   1.119 +						     Thm ("",
   1.120 +							  num_str )
   1.121 +						     ],
   1.122 +					      scr=EmptyScr,srls=Erls},
   1.123 +				   id="e_rls",preconds=[],rew_ord=("dummy_ord",
   1.124 +								   dummy_ord),
   1.125 +				   rules=[],scr=EmptyScr,srls=Erls}
   1.126 +			      ) 
   1.127 +			  ((#rules o rep_rls) LinEq_erls))
   1.128 +	      (append_rls "ops_preds" calculate_Rational
   1.129 +			  [Calc ("op =",eval_equal "#equal_"),
   1.130 +			   Thm ("plus_leq", num_str plus_leq),
   1.131 +			   Thm ("minus_leq", num_str minus_leq),
   1.132 +			   Thm ("rat_leq1", num_str rat_leq1),
   1.133 +			   Thm ("rat_leq2", num_str rat_leq2),
   1.134 +			   Thm ("rat_leq3", num_str rat_leq3)
   1.135 +			   ]);
   1.136 +-----*)
   1.137 +
   1.138 +
   1.139 +val cancel_leading_coeff = prep_rls(
   1.140 +  Rls {id = "cancel_leading_coeff", preconds = [], 
   1.141 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.142 +      erls = PolyEq_erls, srls = Erls, calc = [], (*asm_thm = [],*)
   1.143 +      rules = [Thm ("cancel_leading_coeff1",num_str cancel_leading_coeff1),
   1.144 +	       Thm ("cancel_leading_coeff2",num_str cancel_leading_coeff2),
   1.145 +	       Thm ("cancel_leading_coeff3",num_str cancel_leading_coeff3),
   1.146 +	       Thm ("cancel_leading_coeff4",num_str cancel_leading_coeff4),
   1.147 +	       Thm ("cancel_leading_coeff5",num_str cancel_leading_coeff5),
   1.148 +	       Thm ("cancel_leading_coeff6",num_str cancel_leading_coeff6),
   1.149 +	       Thm ("cancel_leading_coeff7",num_str cancel_leading_coeff7),
   1.150 +	       Thm ("cancel_leading_coeff8",num_str cancel_leading_coeff8),
   1.151 +	       Thm ("cancel_leading_coeff9",num_str cancel_leading_coeff9),
   1.152 +	       Thm ("cancel_leading_coeff10",num_str cancel_leading_coeff10),
   1.153 +	       Thm ("cancel_leading_coeff11",num_str cancel_leading_coeff11),
   1.154 +	       Thm ("cancel_leading_coeff12",num_str cancel_leading_coeff12),
   1.155 +	       Thm ("cancel_leading_coeff13",num_str cancel_leading_coeff13)
   1.156 +	       ],
   1.157 +      scr = Script ((term_of o the o (parse thy)) 
   1.158 +      "empty_script")
   1.159 +      }:rls);
   1.160 +val complete_square = prep_rls(
   1.161 +  Rls {id = "complete_square", preconds = [], 
   1.162 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.163 +      erls = PolyEq_erls, srls = Erls, calc = [], (*asm_thm = [],*)
   1.164 +      rules = [Thm ("complete_square1",num_str complete_square1),
   1.165 +	       Thm ("complete_square2",num_str complete_square2),
   1.166 +	       Thm ("complete_square3",num_str complete_square3),
   1.167 +	       Thm ("complete_square4",num_str complete_square4),
   1.168 +	       Thm ("complete_square5",num_str complete_square5)
   1.169 +	       ],
   1.170 +      scr = Script ((term_of o the o (parse thy)) 
   1.171 +      "empty_script")
   1.172 +      }:rls);
   1.173 +ruleset' := overwritelthy thy (!ruleset',
   1.174 +			[("cancel_leading_coeff",cancel_leading_coeff),
   1.175 +			 ("complete_square",complete_square),
   1.176 +			 ("PolyEq_erls",PolyEq_erls)(*FIXXXME:del with rls.rls'*)
   1.177 +			 ]);
   1.178 +val polyeq_simplify = prep_rls(
   1.179 +  Rls {id = "polyeq_simplify", preconds = [], 
   1.180 +       rew_ord = ("termlessI",termlessI), 
   1.181 +       erls = PolyEq_erls, 
   1.182 +       srls = Erls, 
   1.183 +       calc = [], 
   1.184 +       (*asm_thm = [],*)
   1.185 +       rules = [Thm  ("real_assoc_1",num_str real_assoc_1),
   1.186 +		Thm  ("real_assoc_2",num_str real_assoc_2),
   1.187 +		Thm  ("real_diff_minus",num_str real_diff_minus),
   1.188 +		Thm  ("real_unari_minus",num_str real_unari_minus),
   1.189 +		Thm  ("realpow_multI",num_str realpow_multI),
   1.190 +		Calc ("op +",eval_binop "#add_"),
   1.191 +		Calc ("op -",eval_binop "#sub_"),
   1.192 +		Calc ("op *",eval_binop "#mult_"),
   1.193 +		Calc ("HOL.divide", eval_cancel "#divide_"),
   1.194 +		Calc ("Root.sqrt",eval_sqrt "#sqrt_"),
   1.195 +		Calc ("Atools.pow" ,eval_binop "#power_"),
   1.196 +                Rls_ reduce_012
   1.197 +                ],
   1.198 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.199 +       }:rls);
   1.200 +ruleset' := overwritelthy thy (!ruleset',
   1.201 +			  [("polyeq_simplify",polyeq_simplify)]);
   1.202 +
   1.203 +
   1.204 +(* ------------- polySolve ------------------ *)
   1.205 +(* -- d0 -- *)
   1.206 +(*isolate the bound variable in an d0 equation; 'bdv' is a meta-constant*)
   1.207 +val d0_polyeq_simplify = prep_rls(
   1.208 +  Rls {id = "d0_polyeq_simplify", preconds = [],
   1.209 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.210 +       erls = PolyEq_erls,
   1.211 +       srls = Erls, 
   1.212 +       calc = [], 
   1.213 +       (*asm_thm = [],*)
   1.214 +       rules = [Thm("d0_true",num_str d0_true),
   1.215 +		Thm("d0_false",num_str d0_false)
   1.216 +		],
   1.217 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.218 +       }:rls);
   1.219 +(* -- d1 -- *)
   1.220 +(*isolate the bound variable in an d1 equation; 'bdv' is a meta-constant*)
   1.221 +val d1_polyeq_simplify = prep_rls(
   1.222 +  Rls {id = "d1_polyeq_simplify", preconds = [],
   1.223 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.224 +       erls = PolyEq_erls,
   1.225 +       srls = Erls, 
   1.226 +       calc = [], 
   1.227 +       (*asm_thm = [("d1_isolate_div","")],*)
   1.228 +       rules = [
   1.229 +		Thm("d1_isolate_add1",num_str d1_isolate_add1), 
   1.230 +		(* a+bx=0 -> bx=-a *)
   1.231 +		Thm("d1_isolate_add2",num_str d1_isolate_add2), 
   1.232 +		(* a+ x=0 ->  x=-a *)
   1.233 +		Thm("d1_isolate_div",num_str d1_isolate_div)    
   1.234 +		(*   bx=c -> x=c/b *)  
   1.235 +		],
   1.236 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.237 +       }:rls);
   1.238 +(* -- d2 -- *)
   1.239 +(*isolate the bound variable in an d2 equation with bdv only; 'bdv' is a meta-constant*)
   1.240 +val d2_polyeq_bdv_only_simplify = prep_rls(
   1.241 +  Rls {id = "d2_polyeq_bdv_only_simplify", preconds = [],
   1.242 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.243 +       erls = PolyEq_erls,
   1.244 +       srls = Erls, 
   1.245 +       calc = [], 
   1.246 +       (*asm_thm = [("d2_sqrt_equation1",""),("d2_sqrt_equation1_neg",""),
   1.247 +                  ("d2_isolate_div","")],*)
   1.248 +       rules = [
   1.249 +		Thm("d2_prescind1",num_str d2_prescind1),              (*   ax+bx^2=0 -> x(a+bx)=0 *)
   1.250 +		Thm("d2_prescind2",num_str d2_prescind2),              (*   ax+ x^2=0 -> x(a+ x)=0 *)
   1.251 +		Thm("d2_prescind3",num_str d2_prescind3),              (*    x+bx^2=0 -> x(1+bx)=0 *)
   1.252 +		Thm("d2_prescind4",num_str d2_prescind4),              (*    x+ x^2=0 -> x(1+ x)=0 *)
   1.253 +		Thm("d2_sqrt_equation1",num_str d2_sqrt_equation1),       (* x^2=c   -> x=+-sqrt(c)*)
   1.254 +		Thm("d2_sqrt_equation1_neg",num_str d2_sqrt_equation1_neg),  (* [0<c] x^2=c  -> [] *)
   1.255 +		Thm("d2_sqrt_equation2",num_str d2_sqrt_equation2),         (*  x^2=0 ->    x=0    *)
   1.256 +		Thm("d2_reduce_equation1",num_str d2_reduce_equation1),(* x(a+bx)=0 -> x=0 | a+bx=0*)
   1.257 +		Thm("d2_reduce_equation2",num_str d2_reduce_equation2),(* x(a+ x)=0 -> x=0 | a+ x=0*)
   1.258 +		Thm("d2_isolate_div",num_str d2_isolate_div)                   (* bx^2=c -> x^2=c/b*)
   1.259 +		],
   1.260 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.261 +       }:rls);
   1.262 +(*isolate the bound variable in an d2 equation with sqrt only; 'bdv' is a meta-constant*)
   1.263 +val d2_polyeq_sq_only_simplify = prep_rls(
   1.264 +  Rls {id = "d2_polyeq_sq_only_simplify", preconds = [],
   1.265 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.266 +       erls = PolyEq_erls,
   1.267 +       srls = Erls, 
   1.268 +       calc = [], 
   1.269 +       (*asm_thm = [("d2_sqrt_equation1",""),("d2_sqrt_equation1_neg",""),
   1.270 +                  ("d2_isolate_div","")],*)
   1.271 +       rules = [
   1.272 +		Thm("d2_isolate_add1",num_str d2_isolate_add1),        (* a+   bx^2=0 -> bx^2=(-1)a*)
   1.273 +		Thm("d2_isolate_add2",num_str d2_isolate_add2),        (* a+    x^2=0 ->  x^2=(-1)a*)
   1.274 +		Thm("d2_sqrt_equation2",num_str d2_sqrt_equation2),         (*  x^2=0 ->    x=0    *)
   1.275 +		Thm("d2_sqrt_equation1",num_str d2_sqrt_equation1),       (* x^2=c   -> x=+-sqrt(c)*)
   1.276 +		Thm("d2_sqrt_equation1_neg",num_str d2_sqrt_equation1_neg),(* [c<0] x^2=c  -> x=[] *)
   1.277 +		Thm("d2_isolate_div",num_str d2_isolate_div)                   (* bx^2=c -> x^2=c/b*)
   1.278 +		],
   1.279 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.280 +       }:rls);
   1.281 +(*isolate the bound variable in an d2 equation with pqFormula; 'bdv' is a meta-constant*)
   1.282 +val d2_polyeq_pqFormula_simplify = prep_rls(
   1.283 +  Rls {id = "d2_polyeq_pqFormula_simplify", preconds = [],
   1.284 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.285 +       erls = PolyEq_erls,
   1.286 +       srls = Erls, 
   1.287 +       calc = [], 
   1.288 +       (*asm_thm = [("d2_pqformula1",""),("d2_pqformula2",""),("d2_pqformula3",""),("d2_pqformula4",""),
   1.289 +                  ("d2_pqformula5",""),("d2_pqformula6",""),("d2_pqformula7",""),("d2_pqformula8",""),
   1.290 +                  ("d2_pqformula9",""),("d2_pqformula10",""),
   1.291 +                  ("d2_pqformula1_neg",""),("d2_pqformula2_neg",""),("d2_pqformula3_neg",""),
   1.292 +                  ("d2_pqformula4_neg",""),("d2_pqformula9_neg",""),("d2_pqformula10_neg","")],*)
   1.293 +       rules = [
   1.294 +		Thm("d2_pqformula1",num_str d2_pqformula1),                         (* q+px+ x^2=0 *)
   1.295 +		Thm("d2_pqformula1_neg",num_str d2_pqformula1_neg),                 (* q+px+ x^2=0 *)
   1.296 +		Thm("d2_pqformula2",num_str d2_pqformula2),                         (* q+px+1x^2=0 *)
   1.297 +		Thm("d2_pqformula2_neg",num_str d2_pqformula2_neg),                 (* q+px+1x^2=0 *)
   1.298 +		Thm("d2_pqformula3",num_str d2_pqformula3),                         (* q+ x+ x^2=0 *)
   1.299 +		Thm("d2_pqformula3_neg",num_str d2_pqformula3_neg),                 (* q+ x+ x^2=0 *)
   1.300 +		Thm("d2_pqformula4",num_str d2_pqformula4),                         (* q+ x+1x^2=0 *)
   1.301 +		Thm("d2_pqformula4_neg",num_str d2_pqformula4_neg),                 (* q+ x+1x^2=0 *)
   1.302 +		Thm("d2_pqformula5",num_str d2_pqformula5),                         (*   qx+ x^2=0 *)
   1.303 +		Thm("d2_pqformula6",num_str d2_pqformula6),                         (*   qx+1x^2=0 *)
   1.304 +		Thm("d2_pqformula7",num_str d2_pqformula7),                         (*    x+ x^2=0 *)
   1.305 +		Thm("d2_pqformula8",num_str d2_pqformula8),                         (*    x+1x^2=0 *)
   1.306 +		Thm("d2_pqformula9",num_str d2_pqformula9),                         (* q   +1x^2=0 *)
   1.307 +		Thm("d2_pqformula9_neg",num_str d2_pqformula9_neg),                 (* q   +1x^2=0 *)
   1.308 +		Thm("d2_pqformula10",num_str d2_pqformula10),                       (* q   + x^2=0 *)
   1.309 +		Thm("d2_pqformula10_neg",num_str d2_pqformula10_neg),               (* q   + x^2=0 *)
   1.310 +		Thm("d2_sqrt_equation2",num_str d2_sqrt_equation2),                 (*       x^2=0 *)
   1.311 +		Thm("d2_sqrt_equation3",num_str d2_sqrt_equation3)                  (*      1x^2=0 *)
   1.312 +		],
   1.313 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.314 +       }:rls);
   1.315 +(*isolate the bound variable in an d2 equation with abcFormula; 'bdv' is a meta-constant*)
   1.316 +val d2_polyeq_abcFormula_simplify = prep_rls(
   1.317 +  Rls {id = "d2_polyeq_abcFormula_simplify", preconds = [],
   1.318 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.319 +       erls = PolyEq_erls,
   1.320 +       srls = Erls, 
   1.321 +       calc = [], 
   1.322 +       (*asm_thm = [("d2_abcformula1",""),("d2_abcformula2",""),("d2_abcformula3",""),
   1.323 +                  ("d2_abcformula4",""),("d2_abcformula5",""),("d2_abcformula6",""),
   1.324 +                  ("d2_abcformula7",""),("d2_abcformula8",""),("d2_abcformula9",""),
   1.325 +                  ("d2_abcformula10",""),("d2_abcformula1_neg",""),("d2_abcformula2_neg",""),
   1.326 +                  ("d2_abcformula3_neg",""),("d2_abcformula4_neg",""),("d2_abcformula5_neg",""),
   1.327 +                  ("d2_abcformula6_neg","")],*)
   1.328 +       rules = [
   1.329 +		Thm("d2_abcformula1",num_str d2_abcformula1),                        (*c+bx+cx^2=0 *)
   1.330 +		Thm("d2_abcformula1_neg",num_str d2_abcformula1_neg),                (*c+bx+cx^2=0 *)
   1.331 +		Thm("d2_abcformula2",num_str d2_abcformula2),                        (*c+ x+cx^2=0 *)
   1.332 +		Thm("d2_abcformula2_neg",num_str d2_abcformula2_neg),                (*c+ x+cx^2=0 *)
   1.333 +		Thm("d2_abcformula3",num_str d2_abcformula3),                        (*c+bx+ x^2=0 *)
   1.334 +		Thm("d2_abcformula3_neg",num_str d2_abcformula3_neg),                (*c+bx+ x^2=0 *)
   1.335 +		Thm("d2_abcformula4",num_str d2_abcformula4),                        (*c+ x+ x^2=0 *)
   1.336 +		Thm("d2_abcformula4_neg",num_str d2_abcformula4_neg),                (*c+ x+ x^2=0 *)
   1.337 +		Thm("d2_abcformula5",num_str d2_abcformula5),                        (*c+   cx^2=0 *)
   1.338 +		Thm("d2_abcformula5_neg",num_str d2_abcformula5_neg),                (*c+   cx^2=0 *)
   1.339 +		Thm("d2_abcformula6",num_str d2_abcformula6),                        (*c+    x^2=0 *)
   1.340 +		Thm("d2_abcformula6_neg",num_str d2_abcformula6_neg),                (*c+    x^2=0 *)
   1.341 +		Thm("d2_abcformula7",num_str d2_abcformula7),                        (*  bx+ax^2=0 *)
   1.342 +		Thm("d2_abcformula8",num_str d2_abcformula8),                        (*  bx+ x^2=0 *)
   1.343 +		Thm("d2_abcformula9",num_str d2_abcformula9),                        (*   x+ax^2=0 *)
   1.344 +		Thm("d2_abcformula10",num_str d2_abcformula10),                      (*   x+ x^2=0 *)
   1.345 +		Thm("d2_sqrt_equation2",num_str d2_sqrt_equation2),                  (*      x^2=0 *)  
   1.346 +		Thm("d2_sqrt_equation3",num_str d2_sqrt_equation3)                   (*     bx^2=0 *)  
   1.347 +		],
   1.348 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.349 +       }:rls);
   1.350 +(*isolate the bound variable in an d2 equation; 'bdv' is a meta-constant*)
   1.351 +val d2_polyeq_simplify = prep_rls(
   1.352 +  Rls {id = "d2_polyeq_simplify", preconds = [],
   1.353 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.354 +       erls = PolyEq_erls,
   1.355 +       srls = Erls, 
   1.356 +       calc = [], 
   1.357 +       (*asm_thm = [("d2_pqformula1",""),("d2_pqformula2",""),("d2_pqformula3",""),("d2_pqformula4",""),
   1.358 +                  ("d2_pqformula1_neg",""),("d2_pqformula2_neg",""),("d2_pqformula3_neg",""),
   1.359 +                  ("d2_pqformula4_neg",""),
   1.360 +                  ("d2_abcformula1",""),("d2_abcformula2",""),("d2_abcformula1_neg",""),
   1.361 +                  ("d2_abcformula2_neg",""), ("d2_sqrt_equation1",""),
   1.362 +                  ("d2_sqrt_equation1_neg",""),("d2_isolate_div","")],*)
   1.363 +       rules = [
   1.364 +		Thm("d2_pqformula1",num_str d2_pqformula1),                         (* p+qx+ x^2=0 *)
   1.365 +		Thm("d2_pqformula1_neg",num_str d2_pqformula1_neg),                 (* p+qx+ x^2=0 *)
   1.366 +		Thm("d2_pqformula2",num_str d2_pqformula2),                         (* p+qx+1x^2=0 *)
   1.367 +		Thm("d2_pqformula2_neg",num_str d2_pqformula2_neg),                 (* p+qx+1x^2=0 *)
   1.368 +		Thm("d2_pqformula3",num_str d2_pqformula3),                         (* p+ x+ x^2=0 *)
   1.369 +		Thm("d2_pqformula3_neg",num_str d2_pqformula3_neg),                 (* p+ x+ x^2=0 *)
   1.370 +		Thm("d2_pqformula4",num_str d2_pqformula4),                         (* p+ x+1x^2=0 *)
   1.371 +		Thm("d2_pqformula4_neg",num_str d2_pqformula4_neg),                 (* p+ x+1x^2=0 *)
   1.372 +		Thm("d2_abcformula1",num_str d2_abcformula1),                       (* c+bx+cx^2=0 *)
   1.373 +		Thm("d2_abcformula1_neg",num_str d2_abcformula1_neg),               (* c+bx+cx^2=0 *)
   1.374 +		Thm("d2_abcformula2",num_str d2_abcformula2),                       (* c+ x+cx^2=0 *)
   1.375 +		Thm("d2_abcformula2_neg",num_str d2_abcformula2_neg),               (* c+ x+cx^2=0 *)
   1.376 +		Thm("d2_prescind1",num_str d2_prescind1),              (*   ax+bx^2=0 -> x(a+bx)=0 *)
   1.377 +		Thm("d2_prescind2",num_str d2_prescind2),              (*   ax+ x^2=0 -> x(a+ x)=0 *)
   1.378 +		Thm("d2_prescind3",num_str d2_prescind3),              (*    x+bx^2=0 -> x(1+bx)=0 *)
   1.379 +		Thm("d2_prescind4",num_str d2_prescind4),              (*    x+ x^2=0 -> x(1+ x)=0 *)
   1.380 +		Thm("d2_isolate_add1",num_str d2_isolate_add1),        (* a+   bx^2=0 -> bx^2=(-1)a*)
   1.381 +		Thm("d2_isolate_add2",num_str d2_isolate_add2),        (* a+    x^2=0 ->  x^2=(-1)a*)
   1.382 +		Thm("d2_sqrt_equation1",num_str d2_sqrt_equation1),       (* x^2=c   -> x=+-sqrt(c)*)
   1.383 +		Thm("d2_sqrt_equation1_neg",num_str d2_sqrt_equation1_neg),(* [c<0] x^2=c   -> x=[]*)
   1.384 +		Thm("d2_sqrt_equation2",num_str d2_sqrt_equation2),         (*  x^2=0 ->    x=0    *)
   1.385 +		Thm("d2_reduce_equation1",num_str d2_reduce_equation1),(* x(a+bx)=0 -> x=0 | a+bx=0*)
   1.386 +		Thm("d2_reduce_equation2",num_str d2_reduce_equation2),(* x(a+ x)=0 -> x=0 | a+ x=0*)
   1.387 +		Thm("d2_isolate_div",num_str d2_isolate_div)                   (* bx^2=c -> x^2=c/b*)
   1.388 +		],
   1.389 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.390 +       }:rls);
   1.391 +(* -- d3 -- *)
   1.392 +(*isolate the bound variable in an d3 equation; 'bdv' is a meta-constant*)
   1.393 +val d3_polyeq_simplify = prep_rls(
   1.394 +  Rls {id = "d3_polyeq_simplify", preconds = [],
   1.395 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.396 +       erls = PolyEq_erls,
   1.397 +       srls = Erls, 
   1.398 +       calc = [], 
   1.399 +       (*asm_thm = [("d3_isolate_div","")],*)
   1.400 +       rules = [
   1.401 +		Thm("d3_reduce_equation1",num_str d3_reduce_equation1),
   1.402 +		(*a*bdv + b*bdv^^^2 + c*bdv^^^3=0) = (bdv=0 | (a + b*bdv + c*bdv^^^2=0)*)
   1.403 +		Thm("d3_reduce_equation2",num_str d3_reduce_equation2),
   1.404 +		(*  bdv + b*bdv^^^2 + c*bdv^^^3=0) = (bdv=0 | (1 + b*bdv + c*bdv^^^2=0)*)
   1.405 +		Thm("d3_reduce_equation3",num_str d3_reduce_equation3),
   1.406 +		(*a*bdv +   bdv^^^2 + c*bdv^^^3=0) = (bdv=0 | (a +   bdv + c*bdv^^^2=0)*)
   1.407 +		Thm("d3_reduce_equation4",num_str d3_reduce_equation4),
   1.408 +		(*  bdv +   bdv^^^2 + c*bdv^^^3=0) = (bdv=0 | (1 +   bdv + c*bdv^^^2=0)*)
   1.409 +		Thm("d3_reduce_equation5",num_str d3_reduce_equation5),
   1.410 +		(*a*bdv + b*bdv^^^2 +   bdv^^^3=0) = (bdv=0 | (a + b*bdv +   bdv^^^2=0)*)
   1.411 +		Thm("d3_reduce_equation6",num_str d3_reduce_equation6),
   1.412 +		(*  bdv + b*bdv^^^2 +   bdv^^^3=0) = (bdv=0 | (1 + b*bdv +   bdv^^^2=0)*)
   1.413 +		Thm("d3_reduce_equation7",num_str d3_reduce_equation7),
   1.414 +		(*a*bdv +   bdv^^^2 +   bdv^^^3=0) = (bdv=0 | (1 +   bdv +   bdv^^^2=0)*)
   1.415 +		Thm("d3_reduce_equation8",num_str d3_reduce_equation8),
   1.416 +		(*  bdv +   bdv^^^2 +   bdv^^^3=0) = (bdv=0 | (1 +   bdv +   bdv^^^2=0)*)
   1.417 +		Thm("d3_reduce_equation9",num_str d3_reduce_equation9),
   1.418 +		(*a*bdv             + c*bdv^^^3=0) = (bdv=0 | (a         + c*bdv^^^2=0)*)
   1.419 +		Thm("d3_reduce_equation10",num_str d3_reduce_equation10),
   1.420 +		(*  bdv             + c*bdv^^^3=0) = (bdv=0 | (1         + c*bdv^^^2=0)*)
   1.421 +		Thm("d3_reduce_equation11",num_str d3_reduce_equation11),
   1.422 +		(*a*bdv             +   bdv^^^3=0) = (bdv=0 | (a         +   bdv^^^2=0)*)
   1.423 +		Thm("d3_reduce_equation12",num_str d3_reduce_equation12),
   1.424 +		(*  bdv             +   bdv^^^3=0) = (bdv=0 | (1         +   bdv^^^2=0)*)
   1.425 +		Thm("d3_reduce_equation13",num_str d3_reduce_equation13),
   1.426 +		(*        b*bdv^^^2 + c*bdv^^^3=0) = (bdv=0 | (    b*bdv + c*bdv^^^2=0)*)
   1.427 +		Thm("d3_reduce_equation14",num_str d3_reduce_equation14),
   1.428 +		(*          bdv^^^2 + c*bdv^^^3=0) = (bdv=0 | (      bdv + c*bdv^^^2=0)*)
   1.429 +		Thm("d3_reduce_equation15",num_str d3_reduce_equation15),
   1.430 +		(*        b*bdv^^^2 +   bdv^^^3=0) = (bdv=0 | (    b*bdv +   bdv^^^2=0)*)
   1.431 +		Thm("d3_reduce_equation16",num_str d3_reduce_equation16),
   1.432 +		(*          bdv^^^2 +   bdv^^^3=0) = (bdv=0 | (      bdv +   bdv^^^2=0)*)
   1.433 +		Thm("d3_isolate_add1",num_str d3_isolate_add1),
   1.434 +		(*[|Not(bdv occurs_in a)|] ==> (a + b*bdv^^^3=0) = (bdv=0 | (b*bdv^^^3=a)*)
   1.435 +		Thm("d3_isolate_add2",num_str d3_isolate_add2),
   1.436 +                (*[|Not(bdv occurs_in a)|] ==> (a +   bdv^^^3=0) = (bdv=0 | (  bdv^^^3=a)*)
   1.437 +	        Thm("d3_isolate_div",num_str d3_isolate_div),
   1.438 +                (*[|Not(b=0)|] ==> (b*bdv^^^3=c) = (bdv^^^3=c/b*)
   1.439 +                Thm("d3_root_equation2",num_str d3_root_equation2),
   1.440 +                (*(bdv^^^3=0) = (bdv=0) *)
   1.441 +	        Thm("d3_root_equation1",num_str d3_root_equation1)
   1.442 +                (*bdv^^^3=c) = (bdv = nroot 3 c*)
   1.443 +		],
   1.444 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.445 +       }:rls);
   1.446 +(* -- d4 -- *)
   1.447 +(*isolate the bound variable in an d4 equation; 'bdv' is a meta-constant*)
   1.448 +val d4_polyeq_simplify = prep_rls(
   1.449 +  Rls {id = "d4_polyeq_simplify", preconds = [],
   1.450 +       rew_ord = ("e_rew_ord",e_rew_ord),
   1.451 +       erls = PolyEq_erls,
   1.452 +       srls = Erls, 
   1.453 +       calc = [], 
   1.454 +       (*asm_thm = [],*)
   1.455 +       rules = [Thm("d4_sub_u1",num_str d4_sub_u1)  
   1.456 +		(* ax^4+bx^2+c=0 -> x=+-sqrt(ax^2+bx^+c) *)
   1.457 +		],
   1.458 +       scr = Script ((term_of o the o (parse thy)) "empty_script")
   1.459 +       }:rls);
   1.460 +  
   1.461 +ruleset' := overwritelthy thy (!ruleset',
   1.462 +                        [("d0_polyeq_simplify", d0_polyeq_simplify),
   1.463 +                         ("d1_polyeq_simplify", d1_polyeq_simplify),
   1.464 +                         ("d2_polyeq_simplify", d2_polyeq_simplify),
   1.465 +                         ("d2_polyeq_bdv_only_simplify", d2_polyeq_bdv_only_simplify),
   1.466 +                         ("d2_polyeq_sq_only_simplify", d2_polyeq_sq_only_simplify),
   1.467 +                         ("d2_polyeq_pqFormula_simplify", d2_polyeq_pqFormula_simplify),
   1.468 +                         ("d2_polyeq_abcFormula_simplify", d2_polyeq_abcFormula_simplify),
   1.469 +                         ("d3_polyeq_simplify", d3_polyeq_simplify),
   1.470 +			 ("d4_polyeq_simplify", d4_polyeq_simplify)
   1.471 +			 ]);
   1.472 +
   1.473 +(*------------------------problems------------------------*)
   1.474 +(*
   1.475 +(get_pbt ["degree_2","polynomial","univariate","equation"]);
   1.476 +show_ptyps(); 
   1.477 +*)
   1.478 +
   1.479 +(*-------------------------poly-----------------------*)
   1.480 +store_pbt
   1.481 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly" [] e_pblID
   1.482 + (["polynomial","univariate","equation"],
   1.483 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.484 +   ("#Where" ,["~((e_::bool) is_ratequation_in (v_::real))",
   1.485 +	       "~((lhs e_) is_rootTerm_in (v_::real))",
   1.486 +	       "~((rhs e_) is_rootTerm_in (v_::real))"]),
   1.487 +   ("#Find"  ,["solutions v_i_"])
   1.488 +   ],
   1.489 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.490 +  []));
   1.491 +(*--- d0 ---*)
   1.492 +store_pbt
   1.493 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg0" [] e_pblID
   1.494 + (["degree_0","polynomial","univariate","equation"],
   1.495 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.496 +   ("#Where" ,["matches (?a = 0) e_",
   1.497 +	       "(lhs e_) is_poly_in v_",
   1.498 +	       "((lhs e_) has_degree_in v_ ) = 0"
   1.499 +	      ]),
   1.500 +   ("#Find"  ,["solutions v_i_"])
   1.501 +  ],
   1.502 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.503 +  [["PolyEq","solve_d0_polyeq_equation"]]));
   1.504 +
   1.505 +(*--- d1 ---*)
   1.506 +store_pbt
   1.507 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg1" [] e_pblID
   1.508 + (["degree_1","polynomial","univariate","equation"],
   1.509 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.510 +   ("#Where" ,["matches (?a = 0) e_",
   1.511 +	       "(lhs e_) is_poly_in v_",
   1.512 +	       "((lhs e_) has_degree_in v_ ) = 1"
   1.513 +	      ]),
   1.514 +   ("#Find"  ,["solutions v_i_"])
   1.515 +  ],
   1.516 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.517 +  [["PolyEq","solve_d1_polyeq_equation"]]));
   1.518 +
   1.519 +(*--- d2 ---*)
   1.520 +store_pbt
   1.521 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg2" [] e_pblID
   1.522 + (["degree_2","polynomial","univariate","equation"],
   1.523 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.524 +   ("#Where" ,["matches (?a = 0) e_",
   1.525 +	       "(lhs e_) is_poly_in v_ ",
   1.526 +	       "((lhs e_) has_degree_in v_ ) = 2"]),
   1.527 +   ("#Find"  ,["solutions v_i_"])
   1.528 +  ],
   1.529 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.530 +  [["PolyEq","solve_d2_polyeq_equation"]]));
   1.531 +
   1.532 + store_pbt
   1.533 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg2_sqonly" [] e_pblID
   1.534 + (["sq_only","degree_2","polynomial","univariate","equation"],
   1.535 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.536 +   ("#Where" ,["matches ( ?a +    ?v_^^^2 = 0) e_ | \
   1.537 +	       \matches ( ?a + ?b*?v_^^^2 = 0) e_ | \
   1.538 +	       \matches (         ?v_^^^2 = 0) e_ | \
   1.539 +	       \matches (      ?b*?v_^^^2 = 0) e_" ,
   1.540 +	       "Not (matches (?a +    ?v_ +    ?v_^^^2 = 0) e_) &\
   1.541 +	       \Not (matches (?a + ?b*?v_ +    ?v_^^^2 = 0) e_) &\
   1.542 +	       \Not (matches (?a +    ?v_ + ?c*?v_^^^2 = 0) e_) &\
   1.543 +	       \Not (matches (?a + ?b*?v_ + ?c*?v_^^^2 = 0) e_) &\
   1.544 +	       \Not (matches (        ?v_ +    ?v_^^^2 = 0) e_) &\
   1.545 +	       \Not (matches (     ?b*?v_ +    ?v_^^^2 = 0) e_) &\
   1.546 +	       \Not (matches (        ?v_ + ?c*?v_^^^2 = 0) e_) &\
   1.547 +	       \Not (matches (     ?b*?v_ + ?c*?v_^^^2 = 0) e_)"]),
   1.548 +   ("#Find"  ,["solutions v_i_"])
   1.549 +  ],
   1.550 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.551 +  [["PolyEq","solve_d2_polyeq_sqonly_equation"]]));
   1.552 +
   1.553 +store_pbt
   1.554 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg2_bdvonly" [] e_pblID
   1.555 + (["bdv_only","degree_2","polynomial","univariate","equation"],
   1.556 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.557 +   ("#Where" ,["matches (?a*?v_ +    ?v_^^^2 = 0) e_ | \
   1.558 +	       \matches (   ?v_ +    ?v_^^^2 = 0) e_ | \
   1.559 +	       \matches (   ?v_ + ?b*?v_^^^2 = 0) e_ | \
   1.560 +	       \matches (?a*?v_ + ?b*?v_^^^2 = 0) e_ | \
   1.561 +	       \matches (            ?v_^^^2 = 0) e_ | \
   1.562 +	       \matches (         ?b*?v_^^^2 = 0) e_ "]),
   1.563 +   ("#Find"  ,["solutions v_i_"])
   1.564 +  ],
   1.565 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.566 +  [["PolyEq","solve_d2_polyeq_bdvonly_equation"]]));
   1.567 +
   1.568 +store_pbt
   1.569 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg2_pq" [] e_pblID
   1.570 + (["pqFormula","degree_2","polynomial","univariate","equation"],
   1.571 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.572 +   ("#Where" ,["matches (?a + 1*?v_^^^2 = 0) e_ | \
   1.573 +	       \matches (?a +   ?v_^^^2 = 0) e_"]),
   1.574 +   ("#Find"  ,["solutions v_i_"])
   1.575 +  ],
   1.576 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.577 +  [["PolyEq","solve_d2_polyeq_pq_equation"]]));
   1.578 +
   1.579 +store_pbt
   1.580 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg2_abc" [] e_pblID
   1.581 + (["abcFormula","degree_2","polynomial","univariate","equation"],
   1.582 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.583 +   ("#Where" ,["matches (?a +    ?v_^^^2 = 0) e_ | \
   1.584 +	       \matches (?a + ?b*?v_^^^2 = 0) e_"]),
   1.585 +   ("#Find"  ,["solutions v_i_"])
   1.586 +  ],
   1.587 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.588 +  [["PolyEq","solve_d2_polyeq_abc_equation"]]));
   1.589 +
   1.590 +(*--- d3 ---*)
   1.591 +store_pbt
   1.592 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg3" [] e_pblID
   1.593 + (["degree_3","polynomial","univariate","equation"],
   1.594 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.595 +   ("#Where" ,["matches (?a = 0) e_",
   1.596 +	       "(lhs e_) is_poly_in v_ ",
   1.597 +	       "((lhs e_) has_degree_in v_) = 3"]),
   1.598 +   ("#Find"  ,["solutions v_i_"])
   1.599 +  ],
   1.600 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.601 +  [["PolyEq","solve_d3_polyeq_equation"]]));
   1.602 +
   1.603 +(*--- d4 ---*)
   1.604 +store_pbt
   1.605 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_deg4" [] e_pblID
   1.606 + (["degree_4","polynomial","univariate","equation"],
   1.607 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.608 +   ("#Where" ,["matches (?a = 0) e_",
   1.609 +	       "(lhs e_) is_poly_in v_ ",
   1.610 +	       "((lhs e_) has_degree_in v_) = 4"]),
   1.611 +   ("#Find"  ,["solutions v_i_"])
   1.612 +  ],
   1.613 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.614 +  [(*["PolyEq","solve_d4_polyeq_equation"]*)]));
   1.615 +
   1.616 +(*--- normalize ---*)
   1.617 +store_pbt
   1.618 + (prep_pbt PolyEq.thy "pbl_equ_univ_poly_norm" [] e_pblID
   1.619 + (["normalize","polynomial","univariate","equation"],
   1.620 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.621 +   ("#Where" ,["(Not((matches (?a = 0 ) e_ ))) |\
   1.622 +	       \(Not(((lhs e_) is_poly_in v_)))"]),
   1.623 +   ("#Find"  ,["solutions v_i_"])
   1.624 +  ],
   1.625 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.626 +  [["PolyEq","normalize_poly"]]));
   1.627 +(*-------------------------expanded-----------------------*)
   1.628 +store_pbt
   1.629 + (prep_pbt PolyEq.thy "pbl_equ_univ_expand" [] e_pblID
   1.630 + (["expanded","univariate","equation"],
   1.631 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.632 +   ("#Where" ,["matches (?a = 0) e_",
   1.633 +	       "(lhs e_) is_expanded_in v_ "]),
   1.634 +   ("#Find"  ,["solutions v_i_"])
   1.635 +   ],
   1.636 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.637 +  []));
   1.638 +
   1.639 +(*--- d2 ---*)
   1.640 +store_pbt
   1.641 + (prep_pbt PolyEq.thy "pbl_equ_univ_expand_deg2" [] e_pblID
   1.642 + (["degree_2","expanded","univariate","equation"],
   1.643 +  [("#Given" ,["equality e_","solveFor v_"]),
   1.644 +   ("#Where" ,["((lhs e_) has_degree_in v_) = 2"]),
   1.645 +   ("#Find"  ,["solutions v_i_"])
   1.646 +  ],
   1.647 +  PolyEq_prls, SOME "solve (e_::bool, v_)",
   1.648 +  [["PolyEq","complete_square"]]));
   1.649 +
   1.650 +
   1.651 +"-------------------------methods-----------------------";
   1.652 +store_met
   1.653 + (prep_met PolyEq.thy "met_polyeq" [] e_metID
   1.654 + (["PolyEq"],
   1.655 +   [],
   1.656 +   {rew_ord'="tless_true",rls'=Atools_erls,calc = [], srls = e_rls, prls=e_rls,
   1.657 +    crls=PolyEq_crls, nrls=norm_Rational
   1.658 +    (*, asm_rls=[],asm_thm=[]*)}, "empty_script"));
   1.659 +
   1.660 +store_met
   1.661 + (prep_met PolyEq.thy "met_polyeq_norm" [] e_metID
   1.662 + (["PolyEq","normalize_poly"],
   1.663 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.664 +   ("#Where" ,["(Not((matches (?a = 0 ) e_ ))) |\
   1.665 +	       \(Not(((lhs e_) is_poly_in v_)))"]),
   1.666 +   ("#Find"  ,["solutions v_i_"])
   1.667 +  ],
   1.668 +   {rew_ord'="termlessI",
   1.669 +    rls'=PolyEq_erls,
   1.670 +    srls=e_rls,
   1.671 +    prls=PolyEq_prls,
   1.672 +    calc=[],
   1.673 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.674 +    asm_rls=[],
   1.675 +    asm_thm=[]*)},
   1.676 +    (*RL: Ratpoly loest Brueche ohne bdv*)
   1.677 +    "Script Normalize_poly (e_::bool) (v_::real) =                     \
   1.678 +    \(let e_ =((Try         (Rewrite     all_left          False)) @@  \ 
   1.679 +    \          (Try (Repeat (Rewrite     makex1_x         False))) @@  \ 
   1.680 +    \          (Try (Repeat (Rewrite_Set expand_binoms    False))) @@  \ 
   1.681 +    \          (Try (Repeat (Rewrite_Set_Inst [(bdv,v_::real)]         \
   1.682 +    \                                 make_ratpoly_in     False))) @@  \
   1.683 +    \          (Try (Repeat (Rewrite_Set polyeq_simplify  False)))) e_ \
   1.684 +    \ in (SubProblem (PolyEq_,[polynomial,univariate,equation],        \
   1.685 +    \                [no_met]) [bool_ e_, real_ v_]))"
   1.686 +   ));
   1.687 +
   1.688 +store_met
   1.689 + (prep_met PolyEq.thy "met_polyeq_d0" [] e_metID
   1.690 + (["PolyEq","solve_d0_polyeq_equation"],
   1.691 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.692 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.693 +	       "((lhs e_) has_degree_in v_) = 0"]),
   1.694 +   ("#Find"  ,["solutions v_i_"])
   1.695 +  ],
   1.696 +   {rew_ord'="termlessI",
   1.697 +    rls'=PolyEq_erls,
   1.698 +    srls=e_rls,
   1.699 +    prls=PolyEq_prls,
   1.700 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.701 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.702 +    asm_rls=[],
   1.703 +    asm_thm=[]*)},
   1.704 +   "Script Solve_d0_polyeq_equation  (e_::bool) (v_::real)  = \
   1.705 +    \(let e_ =  ((Try (Rewrite_Set_Inst [(bdv,v_::real)]      \
   1.706 +    \                  d0_polyeq_simplify  False))) e_        \
   1.707 +    \ in ((Or_to_List e_)::bool list))"
   1.708 + ));
   1.709 +
   1.710 +store_met
   1.711 + (prep_met PolyEq.thy "met_polyeq_d1" [] e_metID
   1.712 + (["PolyEq","solve_d1_polyeq_equation"],
   1.713 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.714 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.715 +	       "((lhs e_) has_degree_in v_) = 1"]),
   1.716 +   ("#Find"  ,["solutions v_i_"])
   1.717 +  ],
   1.718 +   {rew_ord'="termlessI",
   1.719 +    rls'=PolyEq_erls,
   1.720 +    srls=e_rls,
   1.721 +    prls=PolyEq_prls,
   1.722 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.723 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.724 +    (*    asm_rls=["d1_polyeq_simplify"],*)
   1.725 +    asm_rls=[],
   1.726 +    asm_thm=[("d1_isolate_div","")]*)},
   1.727 +   "Script Solve_d1_polyeq_equation  (e_::bool) (v_::real)  =   \
   1.728 +    \(let e_ =  ((Try (Rewrite_Set_Inst [(bdv,v_::real)]        \
   1.729 +    \                  d1_polyeq_simplify   True))          @@  \
   1.730 +    \            (Try (Rewrite_Set polyeq_simplify  False)) @@  \
   1.731 +    \            (Try (Rewrite_Set norm_Rational_parenthesized    False))) e_;\
   1.732 +    \ (L_::bool list) = ((Or_to_List e_)::bool list)            \
   1.733 +    \ in Check_elementwise L_ {(v_::real). Assumptions} )"
   1.734 + ));
   1.735 +
   1.736 +store_met
   1.737 + (prep_met PolyEq.thy "met_polyeq_d22" [] e_metID
   1.738 + (["PolyEq","solve_d2_polyeq_equation"],
   1.739 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.740 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.741 +	       "((lhs e_) has_degree_in v_) = 2"]),
   1.742 +   ("#Find"  ,["solutions v_i_"])
   1.743 +  ],
   1.744 +   {rew_ord'="termlessI",
   1.745 +    rls'=PolyEq_erls,
   1.746 +    srls=e_rls,
   1.747 +    prls=PolyEq_prls,
   1.748 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.749 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.750 +    (*asm_rls=["d2_polyeq_simplify","d1_polyeq_simplify"],*)
   1.751 +    asm_rls=[],
   1.752 +    asm_thm = [("d1_isolate_div",""),("d2_pqformula1",""),("d2_pqformula2",""),
   1.753 +               ("d2_pqformula3",""),("d2_pqformula4",""),("d2_pqformula1_neg",""),
   1.754 +               ("d2_pqformula2_neg",""),("d2_pqformula3_neg",""),("d2_pqformula4_neg",""),
   1.755 +               ("d2_abcformula1",""),("d2_abcformula2",""),("d2_abcformula1_neg",""),
   1.756 +               ("d2_abcformula2_neg",""), ("d2_sqrt_equation1",""),
   1.757 +               ("d2_sqrt_equation1_neg",""), ("d2_isolate_div","")]*)},
   1.758 +   "Script Solve_d2_polyeq_equation  (e_::bool) (v_::real) =      \
   1.759 +    \  (let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_::real)]         \
   1.760 +    \                    d2_polyeq_simplify           True)) @@   \
   1.761 +    \             (Try (Rewrite_Set polyeq_simplify   False)) @@  \
   1.762 +    \             (Try (Rewrite_Set_Inst [(bdv,v_::real)]         \
   1.763 +    \                    d1_polyeq_simplify            True)) @@  \
   1.764 +    \            (Try (Rewrite_Set polyeq_simplify    False)) @@  \
   1.765 +    \            (Try (Rewrite_Set norm_Rational_parenthesized      False))) e_;\
   1.766 +    \ (L_::bool list) = ((Or_to_List e_)::bool list)              \
   1.767 +    \ in Check_elementwise L_ {(v_::real). Assumptions} )"
   1.768 + ));
   1.769 +
   1.770 +store_met
   1.771 + (prep_met PolyEq.thy "met_polyeq_d2_bdvonly" [] e_metID
   1.772 + (["PolyEq","solve_d2_polyeq_bdvonly_equation"],
   1.773 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.774 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.775 +	       "((lhs e_) has_degree_in v_) = 2"]),
   1.776 +   ("#Find"  ,["solutions v_i_"])
   1.777 +  ],
   1.778 +   {rew_ord'="termlessI",
   1.779 +    rls'=PolyEq_erls,
   1.780 +    srls=e_rls,
   1.781 +    prls=PolyEq_prls,
   1.782 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.783 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.784 +    (*asm_rls=["d2_polyeq_bdv_only_simplify","d1_polyeq_simplify "],*)
   1.785 +    asm_rls=[],
   1.786 +    asm_thm=[("d1_isolate_div",""),("d2_isolate_div",""),
   1.787 +             ("d2_sqrt_equation1",""),("d2_sqrt_equation1_neg","")]*)},
   1.788 +   "Script Solve_d2_polyeq_bdvonly_equation  (e_::bool) (v_::real) =\
   1.789 +    \  (let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_::real)]         \
   1.790 +    \                   d2_polyeq_bdv_only_simplify    True)) @@  \
   1.791 +    \             (Try (Rewrite_Set polyeq_simplify   False)) @@  \
   1.792 +    \             (Try (Rewrite_Set_Inst [(bdv,v_::real)]         \
   1.793 +    \                   d1_polyeq_simplify             True)) @@  \
   1.794 +    \            (Try (Rewrite_Set polyeq_simplify    False)) @@  \
   1.795 +    \            (Try (Rewrite_Set norm_Rational_parenthesized      False))) e_;\
   1.796 +    \ (L_::bool list) = ((Or_to_List e_)::bool list)              \
   1.797 +    \ in Check_elementwise L_ {(v_::real). Assumptions} )"
   1.798 + ));
   1.799 +
   1.800 +store_met
   1.801 + (prep_met PolyEq.thy "met_polyeq_d2_sqonly" [] e_metID
   1.802 + (["PolyEq","solve_d2_polyeq_sqonly_equation"],
   1.803 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.804 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.805 +	       "((lhs e_) has_degree_in v_) = 2"]),
   1.806 +   ("#Find"  ,["solutions v_i_"])
   1.807 +  ],
   1.808 +   {rew_ord'="termlessI",
   1.809 +    rls'=PolyEq_erls,
   1.810 +    srls=e_rls,
   1.811 +    prls=PolyEq_prls,
   1.812 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.813 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.814 +    (*asm_rls=["d2_polyeq_sq_only_simplify"],*)
   1.815 +    asm_rls=[],
   1.816 +    asm_thm=[("d2_sqrt_equation1",""),("d2_sqrt_equation1_neg",""),
   1.817 +             ("d2_isolate_div","")]*)},
   1.818 +   "Script Solve_d2_polyeq_sqonly_equation  (e_::bool) (v_::real) =\
   1.819 +    \  (let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_::real)]          \
   1.820 +    \                   d2_polyeq_sq_only_simplify     True)) @@   \
   1.821 +    \            (Try (Rewrite_Set polyeq_simplify    False)) @@   \
   1.822 +    \            (Try (Rewrite_Set norm_Rational_parenthesized      False))) e_; \
   1.823 +    \ (L_::bool list) = ((Or_to_List e_)::bool list)               \
   1.824 +    \ in Check_elementwise L_ {(v_::real). Assumptions} )"
   1.825 + ));
   1.826 +
   1.827 +store_met
   1.828 + (prep_met PolyEq.thy "met_polyeq_d2_pq" [] e_metID
   1.829 + (["PolyEq","solve_d2_polyeq_pq_equation"],
   1.830 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.831 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.832 +	       "((lhs e_) has_degree_in v_) = 2"]),
   1.833 +   ("#Find"  ,["solutions v_i_"])
   1.834 +  ],
   1.835 +   {rew_ord'="termlessI",
   1.836 +    rls'=PolyEq_erls,
   1.837 +    srls=e_rls,
   1.838 +    prls=PolyEq_prls,
   1.839 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.840 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.841 +    (*asm_rls=["d2_polyeq_pqFormula_simplify"],*)
   1.842 +    asm_rls=[],
   1.843 +    asm_thm=[("d2_pqformula1",""),("d2_pqformula2",""),("d2_pqformula3",""),
   1.844 +             ("d2_pqformula4",""),("d2_pqformula5",""),("d2_pqformula6",""),
   1.845 +             ("d2_pqformula7",""),("d2_pqformula8",""),("d2_pqformula9",""),
   1.846 +             ("d2_pqformula10",""),("d2_pqformula1_neg",""),("d2_pqformula2_neg",""),
   1.847 +             ("d2_pqformula3_neg",""), ("d2_pqformula4_neg",""),("d2_pqformula9_neg",""),
   1.848 +             ("d2_pqformula10_neg","")]*)},
   1.849 +   "Script Solve_d2_polyeq_pq_equation  (e_::bool) (v_::real) =   \
   1.850 +    \  (let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_::real)]         \
   1.851 +    \                   d2_polyeq_pqFormula_simplify   True)) @@  \
   1.852 +    \            (Try (Rewrite_Set polyeq_simplify    False)) @@  \
   1.853 +    \            (Try (Rewrite_Set norm_Rational_parenthesized      False))) e_;\
   1.854 +    \ (L_::bool list) = ((Or_to_List e_)::bool list)              \
   1.855 +    \ in Check_elementwise L_ {(v_::real). Assumptions} )"
   1.856 + ));
   1.857 +
   1.858 +store_met
   1.859 + (prep_met PolyEq.thy "met_polyeq_d2_abc" [] e_metID
   1.860 + (["PolyEq","solve_d2_polyeq_abc_equation"],
   1.861 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.862 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.863 +	       "((lhs e_) has_degree_in v_) = 2"]),
   1.864 +   ("#Find"  ,["solutions v_i_"])
   1.865 +  ],
   1.866 +   {rew_ord'="termlessI",
   1.867 +    rls'=PolyEq_erls,
   1.868 +    srls=e_rls,
   1.869 +    prls=PolyEq_prls,
   1.870 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.871 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.872 +    (*asm_rls=["d2_polyeq_abcFormula_simplify"],*)
   1.873 +    asm_rls=[],
   1.874 +    asm_thm=[("d2_abcformula1",""),("d2_abcformula2",""),("d2_abcformula3",""),
   1.875 +             ("d2_abcformula4",""),("d2_abcformula5",""),("d2_abcformula6",""),
   1.876 +             ("d2_abcformula7",""),("d2_abcformula8",""),("d2_abcformula9",""),
   1.877 +             ("d2_abcformula10",""),("d2_abcformula1_neg",""),("d2_abcformula2_neg",""),
   1.878 +             ("d2_abcformula3_neg",""), ("d2_abcformula4_neg",""),("d2_abcformula5_neg",""),
   1.879 +             ("d2_abcformula6_neg","")]*)},
   1.880 +   "Script Solve_d2_polyeq_abc_equation  (e_::bool) (v_::real) =   \
   1.881 +    \  (let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_::real)]          \
   1.882 +    \                   d2_polyeq_abcFormula_simplify   True)) @@  \
   1.883 +    \            (Try (Rewrite_Set polyeq_simplify     False)) @@  \
   1.884 +    \            (Try (Rewrite_Set norm_Rational_parenthesized       False))) e_;\
   1.885 +    \ (L_::bool list) = ((Or_to_List e_)::bool list)               \
   1.886 +    \ in Check_elementwise L_ {(v_::real). Assumptions} )"
   1.887 + ));
   1.888 +
   1.889 +store_met
   1.890 + (prep_met PolyEq.thy "met_polyeq_d3" [] e_metID
   1.891 + (["PolyEq","solve_d3_polyeq_equation"],
   1.892 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.893 +   ("#Where" ,["(lhs e_) is_poly_in v_ ",
   1.894 +	       "((lhs e_) has_degree_in v_) = 3"]),
   1.895 +   ("#Find"  ,["solutions v_i_"])
   1.896 +  ],
   1.897 +   {rew_ord'="termlessI",
   1.898 +    rls'=PolyEq_erls,
   1.899 +    srls=e_rls,
   1.900 +    prls=PolyEq_prls,
   1.901 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.902 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.903 +    (* asm_rls=["d1_polyeq_simplify","d2_polyeq_simplify","d1_polyeq_simplify"],*)
   1.904 +    asm_rls=[],
   1.905 +    asm_thm=[("d3_isolate_div",""),("d1_isolate_div",""),("d2_pqformula1",""),
   1.906 +             ("d2_pqformula2",""),("d2_pqformula3",""),("d2_pqformula4",""),
   1.907 +             ("d2_pqformula1_neg",""), ("d2_pqformula2_neg",""),("d2_pqformula3_neg",""),
   1.908 +             ("d2_pqformula4_neg",""), ("d2_abcformula1",""),("d2_abcformula2",""),
   1.909 +             ("d2_abcformula1_neg",""),("d2_abcformula2_neg",""),
   1.910 +             ("d2_sqrt_equation1",""),("d2_sqrt_equation1_neg",""), ("d2_isolate_div","")]*)},
   1.911 +   "Script Solve_d3_polyeq_equation  (e_::bool) (v_::real) =     \
   1.912 +    \  (let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_::real)]        \
   1.913 +    \                    d3_polyeq_simplify           True)) @@  \
   1.914 +    \             (Try (Rewrite_Set polyeq_simplify  False)) @@  \
   1.915 +    \             (Try (Rewrite_Set_Inst [(bdv,v_::real)]        \
   1.916 +    \                    d2_polyeq_simplify           True)) @@  \
   1.917 +    \             (Try (Rewrite_Set polyeq_simplify  False)) @@  \
   1.918 +    \             (Try (Rewrite_Set_Inst [(bdv,v_::real)]        \   
   1.919 +    \                    d1_polyeq_simplify           True)) @@  \
   1.920 +    \             (Try (Rewrite_Set polyeq_simplify  False)) @@  \
   1.921 +    \             (Try (Rewrite_Set norm_Rational_parenthesized False))) e_;\
   1.922 +    \ (L_::bool list) = ((Or_to_List e_)::bool list)             \
   1.923 +    \ in Check_elementwise L_ {(v_::real). Assumptions} )"
   1.924 +   ));
   1.925 +
   1.926 + (*.solves all expanded (ie. normalized) terms of degree 2.*) 
   1.927 + (*Oct.02 restriction: 'eval_true 0 =< discriminant' ony for integer values
   1.928 +   by 'PolyEq_erls'; restricted until Float.thy is implemented*)
   1.929 +store_met
   1.930 + (prep_met PolyEq.thy "met_polyeq_complsq" [] e_metID
   1.931 + (["PolyEq","complete_square"],
   1.932 +   [("#Given" ,["equality e_","solveFor v_"]),
   1.933 +   ("#Where" ,["matches (?a = 0) e_", 
   1.934 +	       "((lhs e_) has_degree_in v_) = 2"]),
   1.935 +   ("#Find"  ,["solutions v_i_"])
   1.936 +  ],
   1.937 +   {rew_ord'="termlessI",rls'=PolyEq_erls,srls=e_rls,prls=PolyEq_prls,
   1.938 +    calc=[("sqrt", ("Root.sqrt", eval_sqrt "#sqrt_"))],
   1.939 +    crls=PolyEq_crls, nrls=norm_Rational(*,
   1.940 +    asm_rls=[],
   1.941 +    asm_thm=[("root_plus_minus","")]*)},
   1.942 +   "Script Complete_square (e_::bool) (v_::real) =                          \
   1.943 +   \(let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_)] cancel_leading_coeff True))\
   1.944 +   \        @@ (Try (Rewrite_Set_Inst [(bdv,v_)] complete_square True))     \
   1.945 +   \        @@ (Try (Rewrite square_explicit1 False))                       \
   1.946 +   \        @@ (Try (Rewrite square_explicit2 False))                       \
   1.947 +   \        @@ (Rewrite root_plus_minus True)                               \
   1.948 +   \        @@ (Try (Repeat (Rewrite_Inst [(bdv,v_)] bdv_explicit1 False))) \
   1.949 +   \        @@ (Try (Repeat (Rewrite_Inst [(bdv,v_)] bdv_explicit2 False))) \
   1.950 +   \        @@ (Try (Repeat                                                 \
   1.951 +   \                  (Rewrite_Inst [(bdv,v_)] bdv_explicit3 False)))       \
   1.952 +   \        @@ (Try (Rewrite_Set calculate_RootRat False))                  \
   1.953 +   \        @@ (Try (Repeat (Calculate sqrt_)))) e_                         \
   1.954 +   \ in ((Or_to_List e_)::bool list))"
   1.955 +   ));
   1.956 +(*6.10.02: x^2=64: root_plus_minus -/-/-> 
   1.957 +   "Script Complete_square (e_::bool) (v_::real) =                          \
   1.958 +   \(let e_ = ((Try (Rewrite_Set_Inst [(bdv,v_)] cancel_leading_coeff True))\
   1.959 +   \        @@ (Try (Rewrite_Set_Inst [(bdv,v_)] complete_square True))     \
   1.960 +   \        @@ (Try ((Rewrite square_explicit1 False)                       \
   1.961 +   \              Or (Rewrite square_explicit2 False)))                     \
   1.962 +   \        @@ (Rewrite root_plus_minus True)                               \
   1.963 +   \        @@ ((Repeat (Rewrite_Inst [(bdv,v_)] bdv_explicit1 False))      \
   1.964 +   \         Or (Repeat (Rewrite_Inst [(bdv,v_)] bdv_explicit2 False)))     \
   1.965 +   \        @@ (Try (Repeat                                                 \
   1.966 +   \                  (Rewrite_Inst [(bdv,v_)] bdv_explicit3 False)))       \
   1.967 +   \        @@ (Try (Rewrite_Set calculate_RootRat False))                  \
   1.968 +   \        @@ (Try (Repeat (Calculate sqrt_)))) e_                         \
   1.969 +   \ in ((Or_to_List e_)::bool list))"*)
   1.970 +
   1.971 +"******* PolyEq.ML end *******";
   1.972 +
   1.973 +(*eine gehackte termorder*)
   1.974 +local (*. for make_polynomial_in .*)
   1.975 +
   1.976 +open Term;  (* for type order = EQUAL | LESS | GREATER *)
   1.977 +
   1.978 +fun pr_ord EQUAL = "EQUAL"
   1.979 +  | pr_ord LESS  = "LESS"
   1.980 +  | pr_ord GREATER = "GREATER";
   1.981 +
   1.982 +fun dest_hd' x (Const (a, T)) = (((a, 0), T), 0)
   1.983 +  | dest_hd' x (t as Free (a, T)) =
   1.984 +    if x = t then ((("|||||||||||||", 0), T), 0)                        (*WN*)
   1.985 +    else (((a, 0), T), 1)
   1.986 +  | dest_hd' x (Var v) = (v, 2)
   1.987 +  | dest_hd' x (Bound i) = ((("", i), dummyT), 3)
   1.988 +  | dest_hd' x (Abs (_, T, _)) = ((("", 0), T), 4);
   1.989 +
   1.990 +fun size_of_term' x (Const ("Atools.pow",_) $ Free (var,_) $ Free (pot,_)) =
   1.991 +    (case x of                                                          (*WN*)
   1.992 +	    (Free (xstr,_)) => 
   1.993 +		(if xstr = var then 1000*(the (int_of_str pot)) else 3)
   1.994 +	  | _ => raise error ("size_of_term' called with subst = "^
   1.995 +			      (term2str x)))
   1.996 +  | size_of_term' x (Free (subst,_)) =
   1.997 +    (case x of
   1.998 +	    (Free (xstr,_)) => (if xstr = subst then 1000 else 1)
   1.999 +	  | _ => raise error ("size_of_term' called with subst = "^
  1.1000 +			  (term2str x)))
  1.1001 +  | size_of_term' x (Abs (_,_,body)) = 1 + size_of_term' x body
  1.1002 +  | size_of_term' x (f$t) = size_of_term' x f  +  size_of_term' x t
  1.1003 +  | size_of_term' x _ = 1;
  1.1004 +
  1.1005 +
  1.1006 +fun term_ord' x pr thy (Abs (_, T, t), Abs(_, U, u)) =       (* ~ term.ML *)
  1.1007 +      (case term_ord' x pr thy (t, u) of EQUAL => typ_ord (T, U) | ord => ord)
  1.1008 +  | term_ord' x pr thy (t, u) =
  1.1009 +      (if pr then 
  1.1010 +	 let
  1.1011 +	   val (f, ts) = strip_comb t and (g, us) = strip_comb u;
  1.1012 +	   val _=writeln("t= f@ts= \""^
  1.1013 +	      ((Syntax.string_of_term (thy2ctxt thy)) f)^"\" @ \"["^
  1.1014 +	      (commas(map(string_of_cterm o cterm_of(sign_of thy)) ts))^"]\"");
  1.1015 +	   val _=writeln("u= g@us= \""^
  1.1016 +	      ((Syntax.string_of_term (thy2ctxt thy)) g)^"\" @ \"["^
  1.1017 +	      (commas(map(string_of_cterm o cterm_of(sign_of thy)) us))^"]\"");
  1.1018 +	   val _=writeln("size_of_term(t,u)= ("^
  1.1019 +	      (string_of_int(size_of_term' x t))^", "^
  1.1020 +	      (string_of_int(size_of_term' x u))^")");
  1.1021 +	   val _=writeln("hd_ord(f,g)      = "^((pr_ord o (hd_ord x))(f,g)));
  1.1022 +	   val _=writeln("terms_ord(ts,us) = "^
  1.1023 +			   ((pr_ord o (terms_ord x) str false)(ts,us)));
  1.1024 +	   val _=writeln("-------");
  1.1025 +	 in () end
  1.1026 +       else ();
  1.1027 +	 case int_ord (size_of_term' x t, size_of_term' x u) of
  1.1028 +	   EQUAL =>
  1.1029 +	     let val (f, ts) = strip_comb t and (g, us) = strip_comb u in
  1.1030 +	       (case hd_ord x (f, g) of EQUAL => (terms_ord x str pr) (ts, us) 
  1.1031 +	     | ord => ord)
  1.1032 +	     end
  1.1033 +	 | ord => ord)
  1.1034 +and hd_ord x (f, g) =                                        (* ~ term.ML *)
  1.1035 +  prod_ord (prod_ord indexname_ord typ_ord) int_ord (dest_hd' x f, 
  1.1036 +						     dest_hd' x g)
  1.1037 +and terms_ord x str pr (ts, us) = 
  1.1038 +    list_ord (term_ord' x pr (assoc_thy "Isac.thy"))(ts, us);
  1.1039 +(*val x = (term_of o the o (parse thy)) "x"; (*FIXXXXXXME*)
  1.1040 +*)
  1.1041 +
  1.1042 +in
  1.1043 +
  1.1044 +fun ord_make_polynomial_in (pr:bool) thy subst tu = 
  1.1045 +    let
  1.1046 +	(* val _=writeln("*** subs variable is: "^(subst2str subst)); *)
  1.1047 +    in
  1.1048 +	case subst of
  1.1049 +	    (_,x)::_ => (term_ord' x pr thy tu = LESS)
  1.1050 +	  | _ => raise error ("ord_make_polynomial_in called with subst = "^
  1.1051 +			  (subst2str subst))
  1.1052 +    end;
  1.1053 +end;
  1.1054 +
  1.1055 +val order_add_mult_in = prep_rls(
  1.1056 +  Rls{id = "order_add_mult_in", preconds = [], 
  1.1057 +      rew_ord = ("ord_make_polynomial_in",
  1.1058 +		 ord_make_polynomial_in false Poly.thy),
  1.1059 +      erls = e_rls,srls = Erls,
  1.1060 +      calc = [],
  1.1061 +      (*asm_thm = [],*)
  1.1062 +      rules = [Thm ("real_mult_commute",num_str real_mult_commute),
  1.1063 +	       (* z * w = w * z *)
  1.1064 +	       Thm ("real_mult_left_commute",num_str real_mult_left_commute),
  1.1065 +	       (*z1.0 * (z2.0 * z3.0) = z2.0 * (z1.0 * z3.0)*)
  1.1066 +	       Thm ("real_mult_assoc",num_str real_mult_assoc),		
  1.1067 +	       (*z1.0 * z2.0 * z3.0 = z1.0 * (z2.0 * z3.0)*)
  1.1068 +	       Thm ("real_add_commute",num_str real_add_commute),	
  1.1069 +	       (*z + w = w + z*)
  1.1070 +	       Thm ("real_add_left_commute",num_str real_add_left_commute),
  1.1071 +	       (*x + (y + z) = y + (x + z)*)
  1.1072 +	       Thm ("real_add_assoc",num_str real_add_assoc)	               
  1.1073 +	       (*z1.0 + z2.0 + z3.0 = z1.0 + (z2.0 + z3.0)*)
  1.1074 +	       ], scr = EmptyScr}:rls);
  1.1075 +
  1.1076 +val collect_bdv = prep_rls(
  1.1077 +  Rls{id = "collect_bdv", preconds = [], 
  1.1078 +      rew_ord = ("dummy_ord", dummy_ord),
  1.1079 +      erls = e_rls,srls = Erls,
  1.1080 +      calc = [],
  1.1081 +      (*asm_thm = [],*)
  1.1082 +      rules = [Thm ("bdv_collect_1",num_str bdv_collect_1),
  1.1083 +	       Thm ("bdv_collect_2",num_str bdv_collect_2),
  1.1084 +	       Thm ("bdv_collect_3",num_str bdv_collect_3),
  1.1085 +
  1.1086 +	       Thm ("bdv_collect_assoc1_1",num_str bdv_collect_assoc1_1),
  1.1087 +	       Thm ("bdv_collect_assoc1_2",num_str bdv_collect_assoc1_2),
  1.1088 +	       Thm ("bdv_collect_assoc1_3",num_str bdv_collect_assoc1_3),
  1.1089 +
  1.1090 +	       Thm ("bdv_collect_assoc2_1",num_str bdv_collect_assoc2_1),
  1.1091 +	       Thm ("bdv_collect_assoc2_2",num_str bdv_collect_assoc2_2),
  1.1092 +	       Thm ("bdv_collect_assoc2_3",num_str bdv_collect_assoc2_3),
  1.1093 +
  1.1094 +
  1.1095 +	       Thm ("bdv_n_collect_1",num_str bdv_n_collect_1),
  1.1096 +	       Thm ("bdv_n_collect_2",num_str bdv_n_collect_2),
  1.1097 +	       Thm ("bdv_n_collect_3",num_str bdv_n_collect_3),
  1.1098 +
  1.1099 +	       Thm ("bdv_n_collect_assoc1_1",num_str bdv_n_collect_assoc1_1),
  1.1100 +	       Thm ("bdv_n_collect_assoc1_2",num_str bdv_n_collect_assoc1_2),
  1.1101 +	       Thm ("bdv_n_collect_assoc1_3",num_str bdv_n_collect_assoc1_3),
  1.1102 +
  1.1103 +	       Thm ("bdv_n_collect_assoc2_1",num_str bdv_n_collect_assoc2_1),
  1.1104 +	       Thm ("bdv_n_collect_assoc2_2",num_str bdv_n_collect_assoc2_2),
  1.1105 +	       Thm ("bdv_n_collect_assoc2_3",num_str bdv_n_collect_assoc2_3)
  1.1106 +	       ], scr = EmptyScr}:rls);
  1.1107 +
  1.1108 +(*.transforms an arbitrary term without roots to a polynomial [4] 
  1.1109 +   according to knowledge/Poly.sml.*) 
  1.1110 +val make_polynomial_in = prep_rls(
  1.1111 +  Seq {id = "make_polynomial_in", preconds = []:term list, 
  1.1112 +       rew_ord = ("dummy_ord", dummy_ord),
  1.1113 +      erls = Atools_erls, srls = Erls,
  1.1114 +      calc = [], (*asm_thm = [],*)
  1.1115 +      rules = [Rls_ expand_poly,
  1.1116 +	       Rls_ order_add_mult_in,
  1.1117 +	       Rls_ simplify_power,
  1.1118 +	       Rls_ collect_numerals,
  1.1119 +	       Rls_ reduce_012,
  1.1120 +	       Thm ("realpow_oneI",num_str realpow_oneI),
  1.1121 +	       Rls_ discard_parentheses,
  1.1122 +	       Rls_ collect_bdv
  1.1123 +	       ],
  1.1124 +      scr = EmptyScr
  1.1125 +      }:rls);     
  1.1126 +
  1.1127 +val separate_bdvs = 
  1.1128 +    append_rls "separate_bdvs"
  1.1129 +	       collect_bdv
  1.1130 +	       [Thm ("separate_bdv", num_str separate_bdv),
  1.1131 +		(*"?a * ?bdv / ?b = ?a / ?b * ?bdv"*)
  1.1132 +		Thm ("separate_bdv_n", num_str separate_bdv_n),
  1.1133 +		Thm ("separate_1_bdv", num_str separate_1_bdv),
  1.1134 +		(*"?bdv / ?b = (1 / ?b) * ?bdv"*)
  1.1135 +		Thm ("separate_1_bdv_n", num_str separate_1_bdv_n),
  1.1136 +		(*"?bdv ^^^ ?n / ?b = 1 / ?b * ?bdv ^^^ ?n"*)
  1.1137 +		Thm ("real_add_divide_distrib", 
  1.1138 +		     num_str real_add_divide_distrib)
  1.1139 +		(*"(?x + ?y) / ?z = ?x / ?z + ?y / ?z"
  1.1140 +		      WN051031 DOES NOT BELONG TO HERE*)
  1.1141 +		];
  1.1142 +val make_ratpoly_in = prep_rls(
  1.1143 +  Seq {id = "make_ratpoly_in", preconds = []:term list, 
  1.1144 +       rew_ord = ("dummy_ord", dummy_ord),
  1.1145 +      erls = Atools_erls, srls = Erls,
  1.1146 +      calc = [], (*asm_thm = [],*)
  1.1147 +      rules = [Rls_ norm_Rational,
  1.1148 +	       Rls_ order_add_mult_in,
  1.1149 +	       Rls_ discard_parentheses,
  1.1150 +	       Rls_ separate_bdvs,
  1.1151 +	       (* Rls_ rearrange_assoc, WN060916 why does cancel_p not work?*)
  1.1152 +	       Rls_ cancel_p
  1.1153 +	       (*Calc ("HOL.divide"  ,eval_cancel "#divide_") too weak!*)
  1.1154 +	       ],
  1.1155 +      scr = EmptyScr}:rls);      
  1.1156 +
  1.1157 +
  1.1158 +ruleset' := overwritelthy thy (!ruleset',
  1.1159 +  [("order_add_mult_in", order_add_mult_in),
  1.1160 +   ("collect_bdv", collect_bdv),
  1.1161 +   ("make_polynomial_in", make_polynomial_in),
  1.1162 +   ("make_ratpoly_in", make_ratpoly_in),
  1.1163 +   ("separate_bdvs", separate_bdvs)
  1.1164 +   ]);
  1.1165 +