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src/CCL/gfp.thy
author wenzelm
Sun, 29 Nov 1998 13:16:47 +0100
changeset 5989 9670dae0143d
parent 0 a5a9c433f639
permissions -rw-r--r--
proof_general_trans (experimental);
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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















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