src/HOL/Lfp.thy

trivial updates

(*  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