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src/HOL/Big_Operators.thy
changeset 36977 71c8973a604b
parent 36635 080b755377c0
child 39198 f967a16dfcdd 
--- a/src/HOL/Big_Operators.thy	Mon May 17 18:51:25 2010 -0700
+++ b/src/HOL/Big_Operators.thy	Mon May 17 18:59:59 2010 -0700
@@ -673,7 +673,7 @@
   proof induct
     case empty thus ?case by simp
   next
-    case (insert x A) thus ?case by (auto simp: add_nonneg_nonneg)
+    case (insert x A) thus ?case by auto
   qed
 next
   case False thus ?thesis by (simp add: setsum_def)
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