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src/HOL/Data_Structures/AVL_Set.thy
changeset 67967 5a4280946a25
parent 67964 08cc5ab18c84
child 68023 75130777ece4 
--- a/src/HOL/Data_Structures/AVL_Set.thy	Sun Apr 08 12:14:00 2018 +0200
+++ b/src/HOL/Data_Structures/AVL_Set.thy	Sun Apr 08 12:31:08 2018 +0200
@@ -129,7 +129,7 @@
 proof (standard, goal_cases)
   case 1 show ?case by simp
 next
-  case 2 thus ?case by(simp add: isin_set)
+  case 2 thus ?case by(simp add: isin_set_inorder)
 next
   case 3 thus ?case by(simp add: inorder_insert)
 next
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