--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOL/UNITY/FP.thy Fri Apr 03 12:34:33 1998 +0200
@@ -0,0 +1,21 @@
+(* Title: HOL/UNITY/FP
+ ID: $Id$
+ Author: Lawrence C Paulson, Cambridge University Computer Laboratory
+ Copyright 1998 University of Cambridge
+
+Fixed Point of a Program
+
+From Misra, "A Logic for Concurrent Programming", 1994
+*)
+
+FP = UNITY +
+
+constdefs
+
+ FP_Orig :: "('a * 'a)set set => 'a set"
+ "FP_Orig Acts == Union{A. ALL B. stable Acts (A Int B)}"
+
+ FP :: "('a * 'a)set set => 'a set"
+ "FP Acts == {s. stable Acts {s}}"
+
+end