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src/HOL/ex/Rec.thy
author clasohm
Wed, 06 Mar 1996 14:12:24 +0100
changeset 1556 2fd82cec17d4
parent 1476 608483c2122a
permissions -rw-r--r--
added constdefs section
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Rec = Fixedpt +
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consts
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fix     :: ('a=>'a) => 'a
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Dom     :: (('a=>'b) => ('a=>'b)) => 'a set
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Domf    :: (('a=>'b) => ('a=>'b)) => 'a set => 'a set
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rules
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Domf_def "Domf(F,D) == {y . !f g. (!x:D. f(x)=g(x)) --> F(f,y)=F(g,y)}"
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Dom_def  "Dom(F) == lfp(Domf(F))"
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end
isabelle