diff -r 9550a6f4ed4a -r 4ab8d49ab981 src/HOL/MicroJava/BV/BVExample.thy
--- a/src/HOL/MicroJava/BV/BVExample.thy	Wed Nov 27 17:07:05 2002 +0100
+++ b/src/HOL/MicroJava/BV/BVExample.thy	Wed Nov 27 17:11:38 2002 +0100
@@ -456,7 +456,7 @@
   "Bex"    ("(fn A => fn f => exists f A)")
   "Ball"   ("(fn A => fn f => forall f A)")
   "some_elem" ("hd")
-  "op -" :: "'a set \<Rightarrow> 'a set \<Rightarrow> 'a set"  ("(_ \\ _)")
+  "op -" :: "'a set \<Rightarrow> 'a set \<Rightarrow> 'a set"  ("(_ \\\\ _)")
 
 lemma JVM_sup_unfold [code]:
  "JVMType.sup S m n = lift2 (Opt.sup