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src/HOL/MicroJava/J/TypeRel.thy
changeset 10138 412a3ced6efd
parent 10061 fe82134773dc
child 10613 78b1d6c3ee9c 
--- a/src/HOL/MicroJava/J/TypeRel.thy	Tue Oct 03 18:40:25 2000 +0200
+++ b/src/HOL/MicroJava/J/TypeRel.thy	Tue Oct 03 18:44:19 2000 +0200
@@ -52,7 +52,7 @@
  "method (G,C) = (if wf((subcls1 G)^-1) then (case class G C of None => empty
                    | Some (sc,fs,ms) => (case sc of None => empty | Some D => 
                                            if is_class G D then method (G,D) 
-                                                           else arbitrary) \\<oplus>
+                                                           else arbitrary) ++
                                            map_of (map (\\<lambda>(s,  m ). 
                                                         (s,(C,m))) ms))
                   else arbitrary)"
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