author | clasohm |
Mon, 05 Feb 1996 21:29:06 +0100 | |
changeset 1476 | 608483c2122a |
parent 1475 | 7f5a4cd08209 |
child 1558 | 9c6ebfab4e05 |
permissions | -rw-r--r-- |
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(* Title: HOL/Lfp.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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The Knaster-Tarski Theorem |
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*) |
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Lfp = mono + Prod + |
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changeset
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consts lfp :: ['a set=>'a set] => 'a set |
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defs |
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(*least fixed point*) |
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lfp_def "lfp(f) == Inter({u. f(u) <= u})" |
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end |