src/HOL/Lfp.thy
author regensbu
Fri, 06 Oct 1995 16:17:08 +0100
changeset 1273 6960ec882bca
parent 1264 3eb91524b938
child 1370 7361ac9b024d
permissions -rw-r--r--
added 8bit pragmas

(*  Title: 	HOL/Lfp.thy
    ID:         $Id$
    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
    Copyright   1992  University of Cambridge

The Knaster-Tarski Theorem
*)

Lfp = mono + Prod +
consts lfp :: "['a set=>'a set] => 'a set"
defs
 (*least fixed point*)
 lfp_def "lfp(f) == Inter({u. f(u) <= u})"
end