
diff -r 768d3504d7cd -r 12dd5d2e266b Gfp.thy
--- a/Gfp.thy	Thu Nov 24 20:11:40 1994 +0100
+++ b/Gfp.thy	Thu Nov 24 20:31:09 1994 +0100
@@ -8,7 +8,7 @@
 
 Gfp = Lfp +
 consts gfp :: "['a set=>'a set] => 'a set"
-rules
+defs
  (*greatest fixed point*)
  gfp_def "gfp(f) == Union({u. u <= f(u)})"
 end




