ROOT.ML
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(*  Title: 	HOL/ROOT
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    ID:         $Id$
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    Author: 	Tobias Nipkow
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    Copyright   1993  University of Cambridge
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Adds Classical Higher-order Logic to a database containing pure Isabelle. 
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Should be executed in the subdirectory HOL.
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*)
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val banner = "Higher-Order Logic";
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writeln banner;
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structure Readthy = ReadthyFUN (structure ThySyn = ThySyn);
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open Readthy;
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print_depth 1;  
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eta_contract := true;
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use_thy "HOL";
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use "../Provers/hypsubst.ML";
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use "../Provers/classical.ML";
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use "../Provers/simplifier.ML";
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use "../Provers/splitter.ML";
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use "../Provers/ind.ML";
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(** Applying HypsubstFun to generate hyp_subst_tac **)
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structure Hypsubst_Data =
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  struct
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  (*Take apart an equality judgement; otherwise raise Match!*)
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  fun dest_eq (Const("Trueprop",_) $ (Const("op =",_)  $ t $ u)) = (t,u);
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  val imp_intr = impI
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  (*etac rev_cut_eq moves an equality to be the last premise. *)
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  val rev_cut_eq = prove_goal HOL.thy "[| a=b;  a=b ==> R |] ==> R"
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   (fn prems => [ REPEAT(resolve_tac prems 1) ]);
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  val rev_mp = rev_mp
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  val subst = subst 
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  val sym = sym
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  end;
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structure Hypsubst = HypsubstFun(Hypsubst_Data);
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open Hypsubst;
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(** Applying ClassicalFun to create a classical prover **)
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structure Classical_Data = 
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  struct
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  val sizef = size_of_thm
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  val mp = mp
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  val not_elim = notE
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  val swap = swap
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  val hyp_subst_tacs=[hyp_subst_tac]
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  end;
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structure Classical = ClassicalFun(Classical_Data);
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open Classical;
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(*Propositional rules*)
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val prop_cs = empty_cs addSIs [refl,TrueI,conjI,disjCI,impI,notI,iffI]
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                       addSEs [conjE,disjE,impCE,FalseE,iffE];
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(*Quantifier rules*)
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val HOL_cs = prop_cs addSIs [allI] addIs [exI,ex1I] 
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                     addSEs [exE,ex1E] addEs [allE];
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val HOL_dup_cs = prop_cs addSIs [allI] addIs [exCI,ex1I] 
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                         addSEs [exE,ex1E] addEs [all_dupE];
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structure HOL_Induction = InductionFun(struct val spec=spec end);
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open HOL_Induction;
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use     "simpdata.ML";
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use_thy "Ord";
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use_thy "Set";
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use     "fun.ML";
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use     "subset.ML";
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use     "equalities.ML";
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use_thy "Prod";
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use_thy "Sum";
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use     "mono.ML";
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use_thy "LList";
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use "../Pure/install_pp.ML";
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print_depth 8;  
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val HOL_build_completed = ();	(*indicate successful build*)