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src/HOL/HOLCF/Up.thy
changeset 67399 eab6ce8368fa
parent 67312 0d25e02759b7
child 69597 ff784d5a5bfb 
--- a/src/HOL/HOLCF/Up.thy	Wed Jan 10 15:21:49 2018 +0100
+++ b/src/HOL/HOLCF/Up.thy	Wed Jan 10 15:25:09 2018 +0100
@@ -28,7 +28,7 @@
 begin
 
 definition below_up_def:
-  "(op \<sqsubseteq>) \<equiv>
+  "(\<sqsubseteq>) \<equiv>
     (\<lambda>x y.
       (case x of
         Ibottom \<Rightarrow> True
isabelle