author | paulson |
Wed, 03 Mar 1999 11:15:18 +0100 | |
changeset 6301 | 08245f5a436d |
parent 3947 | eb707467f8c5 |
child 8882 | 9df44a4f1bf7 |
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 + global constdefs gfp :: ['a set=>'a set] => 'a set "gfp(f) == Union({u. u <= f(u)})" (*greatest fixed point*) local end