ex/Rec.thy
author lcp
Thu, 21 Jul 1994 10:52:00 +0200
changeset 97 3f4976d8c97f
parent 0 7949f97df77a
permissions -rw-r--r--
HOL/Makefile: now test depends upon SUBST_FILES HOL/Makefile/SUBST_FILES: changed some filenames to upper case HOL/Makefile: now executes ex/ROOT.ML after Subst/ROOT.ML

Rec = Fixedpt +
consts
fix	:: "('a=>'a) => 'a"
Dom	:: "(('a=>'b) => ('a=>'b)) => 'a set"
Domf	:: "(('a=>'b) => ('a=>'b)) => 'a set => 'a set"
rules
Domf_def "Domf(F,D) == {y . !f g. (!x:D. f(x)=g(x)) --> F(f,y)=F(g,y)}"
Dom_def  "Dom(F) == lfp(Domf(F))"
end