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src/HOL/ex/Rec.thy
author clasohm
Wed, 21 Jun 1995 15:47:10 +0200
changeset 1151 c820b3cc3df0
parent 969 b051e2fc2e34
child 1376 92f83b9d17e1
permissions -rw-r--r--
removed \...\ inside strings
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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