src/HOLCF/ex/Fix2.ML
author nipkow
Mon, 13 May 2002 15:27:28 +0200
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(*  Title:      HOLCF/ex/Fix2.ML
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    ID:         $Id$
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    Author:     Franz Regensburger
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    License:    GPL (GNU GENERAL PUBLIC LICENSE)
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*)
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Goal "fix = gix";
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by (rtac ext_cfun 1);
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by (rtac antisym_less 1);
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by (rtac fix_least 1);
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by (rtac gix1_def 1);
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by (rtac gix2_def 1);
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by (rtac (fix_eq RS sym) 1);
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qed "lemma1";
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Goal "gix$F=lub(range(%i. iterate i F UU))";
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by (rtac (lemma1 RS subst) 1);
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by (rtac fix_def2 1);
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qed "lemma2";
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