src/HOLCF/ssum1.ML
author paulson
Wed, 13 Nov 1996 10:47:08 +0100
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permissions -rw-r--r--
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(*  Title: 	HOLCF/ssum1.ML
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    ID:         $Id$
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    Author: 	Franz Regensburger
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    Copyright   1993  Technische Universitaet Muenchen
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Lemmas for theory ssum1.thy
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*)
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open Ssum1;
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local 
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fun eq_left s1 s2 = 
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	(
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	(res_inst_tac [("s",s1),("t",s2)] (inject_Isinl RS subst) 1)
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	THEN 	(rtac trans 1)
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	THEN 	(atac 2)
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	THEN 	(etac sym 1));
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fun eq_right s1 s2 = 
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	(
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	(res_inst_tac [("s",s1),("t",s2)] (inject_Isinr RS subst) 1)
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	THEN 	(rtac trans 1)
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	THEN 	(atac 2)
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	THEN 	(etac sym 1));
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fun UU_left s1 = 
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	(
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	(res_inst_tac [("t",s1)](noteq_IsinlIsinr RS conjunct1 RS ssubst)1)
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	THEN (rtac trans 1)
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	THEN (atac 2)
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	THEN (etac sym 1));
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fun UU_right s1 = 
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	(
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	(res_inst_tac [("t",s1)](noteq_IsinlIsinr RS conjunct2 RS ssubst)1)
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	THEN (rtac trans 1)
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	THEN (atac 2)
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	THEN (etac sym 1))
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in
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val less_ssum1a = prove_goalw Ssum1.thy [less_ssum_def]
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"[|s1=Isinl(x); s2=Isinl(y)|] ==> less_ssum(s1,s2) = (x << y)"
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 (fn prems =>
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	[
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	(cut_facts_tac prems 1),
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	(rtac  select_equality 1),
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	(dtac conjunct1 2),
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	(dtac spec 2),
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	(dtac spec 2),
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	(etac mp 2),
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	(fast_tac HOL_cs 2),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(eq_left "x" "u"),
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	(eq_left "y" "xa"),
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	(rtac refl 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_left "x"),
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	(UU_right "v"),
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	(simp_tac Cfun_ss 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(eq_left "x" "u"),
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	(UU_left "y"),
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	(rtac iffI 1),
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	(etac UU_I 1),
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	(res_inst_tac [("s","x"),("t","UU")] subst 1),
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	(atac 1),
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	(rtac refl_less 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_left "x"),
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	(UU_right "v"),
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	(simp_tac Cfun_ss 1)
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	]);
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val less_ssum1b = prove_goalw Ssum1.thy [less_ssum_def]
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"[|s1=Isinr(x); s2=Isinr(y)|] ==> less_ssum(s1,s2) = (x << y)"
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 (fn prems =>
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	[
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	(cut_facts_tac prems 1),
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	(rtac  select_equality 1),
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	(dtac conjunct2 2),
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	(dtac conjunct1 2),
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	(dtac spec 2),
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	(dtac spec 2),
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	(etac mp 2),
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	(fast_tac HOL_cs 2),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_right "x"),
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	(UU_left "u"),
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	(simp_tac Cfun_ss 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(eq_right "x" "v"),
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	(eq_right "y" "ya"),
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	(rtac refl 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_right "x"),
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	(UU_left "u"),
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	(simp_tac Cfun_ss 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(eq_right "x" "v"),
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	(UU_right "y"),
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	(rtac iffI 1),
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	(etac UU_I 1),
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	(res_inst_tac [("s","UU"),("t","x")] subst 1),
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	(etac sym 1),
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	(rtac refl_less 1)
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	]);
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val less_ssum1c = prove_goalw Ssum1.thy [less_ssum_def]
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"[|s1=Isinl(x); s2=Isinr(y)|] ==> less_ssum(s1,s2) = (x = UU)"
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 (fn prems =>
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	[
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	(cut_facts_tac prems 1),
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	(rtac  select_equality 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(eq_left  "x" "u"),
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	(UU_left "xa"),
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	(rtac iffI 1),
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	(res_inst_tac [("s","x"),("t","UU")] subst 1),
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	(atac 1),
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	(rtac refl_less 1),
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	(etac UU_I 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_left "x"),
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	(UU_right "v"),
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	(simp_tac Cfun_ss 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(eq_left  "x" "u"),
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	(rtac refl 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_left "x"),
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	(UU_right "v"),
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	(simp_tac Cfun_ss 1),
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	(dtac conjunct2 1),
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	(dtac conjunct2 1),
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	(dtac conjunct1 1),
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	(dtac spec 1),
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	(dtac spec 1),
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	(etac mp 1),
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	(fast_tac HOL_cs 1)
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	]);
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val less_ssum1d = prove_goalw Ssum1.thy [less_ssum_def]
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"[|s1=Isinr(x); s2=Isinl(y)|] ==> less_ssum(s1,s2) = (x = UU)"
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 (fn prems =>
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	[
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	(cut_facts_tac prems 1),
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	(rtac  select_equality 1),
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	(dtac conjunct2 2),
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	(dtac conjunct2 2),
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	(dtac conjunct2 2),
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	(dtac spec 2),
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	(dtac spec 2),
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	(etac mp 2),
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	(fast_tac HOL_cs 2),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_right "x"),
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	(UU_left "u"),
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	(simp_tac Cfun_ss 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_right "ya"),
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	(eq_right "x" "v"),
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	(rtac iffI 1),
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	(etac UU_I 2),
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	(res_inst_tac [("s","UU"),("t","x")] subst 1),
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	(etac sym 1),
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	(rtac refl_less 1),
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	(rtac conjI 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(UU_right "x"),
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	(UU_left "u"),
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	(simp_tac HOL_ss 1),
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	(strip_tac 1),
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	(etac conjE 1),
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	(eq_right "x" "v"),
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	(rtac refl 1)
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	])
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end;
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(* ------------------------------------------------------------------------ *)
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(* optimize lemmas about less_ssum                                          *)
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(* ------------------------------------------------------------------------ *)
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val less_ssum2a = prove_goal Ssum1.thy 
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	"less_ssum(Isinl(x),Isinl(y)) = (x << y)"
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 (fn prems =>
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	[
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	(rtac less_ssum1a 1),
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	(rtac refl 1),
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	(rtac refl 1)
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	]);
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val less_ssum2b = prove_goal Ssum1.thy 
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	"less_ssum(Isinr(x),Isinr(y)) = (x << y)"
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 (fn prems =>
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	[
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	(rtac less_ssum1b 1),
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	(rtac refl 1),
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	(rtac refl 1)
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	]);
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val less_ssum2c = prove_goal Ssum1.thy 
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	"less_ssum(Isinl(x),Isinr(y)) = (x = UU)"
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 (fn prems =>
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	[
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	(rtac less_ssum1c 1),
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	(rtac refl 1),
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	(rtac refl 1)
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	]);
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val less_ssum2d = prove_goal Ssum1.thy 
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	"less_ssum(Isinr(x),Isinl(y)) = (x = UU)"
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 (fn prems =>
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	[
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	(rtac less_ssum1d 1),
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	(rtac refl 1),
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	(rtac refl 1)
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	]);
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(* ------------------------------------------------------------------------ *)
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(* less_ssum is a partial order on ++                                     *)
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(* ------------------------------------------------------------------------ *)
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val refl_less_ssum = prove_goal Ssum1.thy "less_ssum(p,p)"
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 (fn prems =>
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	[
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	(res_inst_tac [("p","p")] IssumE2 1),
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	(hyp_subst_tac 1),
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	(rtac (less_ssum2a RS iffD2) 1),
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	(rtac refl_less 1),
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	(hyp_subst_tac 1),
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	(rtac (less_ssum2b RS iffD2) 1),
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	(rtac refl_less 1)
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	]);
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val antisym_less_ssum = prove_goal Ssum1.thy 
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 "[|less_ssum(p1,p2);less_ssum(p2,p1)|] ==> p1=p2"
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 (fn prems =>
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	[
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	(cut_facts_tac prems 1),
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	(res_inst_tac [("p","p1")] IssumE2 1),
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	(hyp_subst_tac 1),
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	(res_inst_tac [("p","p2")] IssumE2 1),
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	(hyp_subst_tac 1),
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	(res_inst_tac [("f","Isinl")] arg_cong 1),
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	(rtac antisym_less 1),
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   279
	(etac (less_ssum2a RS iffD1) 1),
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   280
	(etac (less_ssum2a RS iffD1) 1),
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   281
	(hyp_subst_tac 1),
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   282
	(etac (less_ssum2d RS iffD1 RS ssubst) 1),
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	(etac (less_ssum2c RS iffD1 RS ssubst) 1),
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   284
	(rtac strict_IsinlIsinr 1),
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   285
	(hyp_subst_tac 1),
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   286
	(res_inst_tac [("p","p2")] IssumE2 1),
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   287
	(hyp_subst_tac 1),
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   288
	(etac (less_ssum2c RS iffD1 RS ssubst) 1),
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   289
	(etac (less_ssum2d RS iffD1 RS ssubst) 1),
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   290
	(rtac (strict_IsinlIsinr RS sym) 1),
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   291
	(hyp_subst_tac 1),
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   292
	(res_inst_tac [("f","Isinr")] arg_cong 1),
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   293
	(rtac antisym_less 1),
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   294
	(etac (less_ssum2b RS iffD1) 1),
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   295
	(etac (less_ssum2b RS iffD1) 1)
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	]);
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val trans_less_ssum = prove_goal Ssum1.thy 
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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 "[|less_ssum(p1,p2);less_ssum(p2,p3)|] ==> less_ssum(p1,p3)"
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   300
 (fn prems =>
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   301
	[
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   302
	(cut_facts_tac prems 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   303
	(res_inst_tac [("p","p1")] IssumE2 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   304
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   305
	(res_inst_tac [("p","p3")] IssumE2 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   306
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   307
	(rtac (less_ssum2a RS iffD2) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   308
	(res_inst_tac [("p","p2")] IssumE2 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   309
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   310
	(rtac trans_less 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   311
	(etac (less_ssum2a RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   312
	(etac (less_ssum2a RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   313
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   314
	(etac (less_ssum2c RS iffD1 RS ssubst) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
nipkow
parents:
diff changeset
   315
	(rtac minimal 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
nipkow
parents:
diff changeset
   316
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
nipkow
parents:
diff changeset
   317
	(rtac (less_ssum2c RS iffD2) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   318
	(res_inst_tac [("p","p2")] IssumE2 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   319
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   320
	(rtac UU_I 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   321
	(rtac trans_less 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   322
	(etac (less_ssum2a RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   323
	(rtac (antisym_less_inverse RS conjunct1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   324
	(etac (less_ssum2c RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   325
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
nipkow
parents:
diff changeset
   326
	(etac (less_ssum2c RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   327
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   328
	(res_inst_tac [("p","p3")] IssumE2 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   329
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   330
	(rtac (less_ssum2d RS iffD2) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   331
	(res_inst_tac [("p","p2")] IssumE2 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   332
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   333
	(etac (less_ssum2d RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   334
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
nipkow
parents:
diff changeset
   335
	(rtac UU_I 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   336
	(rtac trans_less 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   337
	(etac (less_ssum2b RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
nipkow
parents:
diff changeset
   338
	(rtac (antisym_less_inverse RS conjunct1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
nipkow
parents:
diff changeset
   339
	(etac (less_ssum2d RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   340
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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parents:
diff changeset
   341
	(rtac (less_ssum2b RS iffD2) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   342
	(res_inst_tac [("p","p2")] IssumE2 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   343
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   344
	(etac (less_ssum2d RS iffD1 RS ssubst) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   345
	(rtac minimal 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   346
	(hyp_subst_tac 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   347
	(rtac trans_less 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   348
	(etac (less_ssum2b RS iffD1) 1),
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   349
	(etac (less_ssum2b RS iffD1) 1)
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   350
	]);
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   351
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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   352
c22b85994e17 Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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diff changeset
   353