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Gfp.thy
author lcp
Fri, 17 Jun 1994 18:34:12 +0200
changeset 85 33d50643dccc
parent 0 7949f97df77a
child 116 ab4328bbff70
permissions -rw-r--r--
HOL/Arith/add_left_commute: tidied HOL/Arith/add_mult_distrib: DELETED DUPLICATE COPY
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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(*  Title: 	HOL/gfp.thy
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    ID:         $Id$
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    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
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    Copyright   1992  University of Cambridge
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Greatest fixed points













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*)













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Gfp = Lfp +













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consts gfp :: "['a set=>'a set] => 'a set"













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rules













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 (*greatest fixed point*)













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 gfp_def "gfp(f) == Union({u. u <= f(u)})"













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end















Old_HOL