author | berghofe |
Thu, 10 Oct 2002 14:18:01 +0200 | |
changeset 13635 | c41e88151b54 |
parent 8882 | 9df44a4f1bf7 |
child 14169 | 0590de71a016 |
permissions | -rw-r--r-- |
(* Title: HOL/gfp.thy ID: $Id$ Author: Lawrence C Paulson, Cambridge University Computer Laboratory Copyright 1994 University of Cambridge Greatest fixed points (requires Lfp too!) *) Gfp = Lfp + constdefs gfp :: ['a set=>'a set] => 'a set "gfp(f) == Union({u. u <= f(u)})" (*greatest fixed point*) end