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src/HOL/Decision_Procs/Commutative_Ring_Complete.thy
changeset 60767 ad5b4771fc19
parent 60708 f425e80a3eb0
child 61586 5197a2ecb658 
--- a/src/HOL/Decision_Procs/Commutative_Ring_Complete.thy	Wed Jul 22 14:55:42 2015 +0200
+++ b/src/HOL/Decision_Procs/Commutative_Ring_Complete.thy	Wed Jul 22 23:26:00 2015 +0200
@@ -212,7 +212,7 @@
     by atomize_elim arith
   then show ?case
   proof cases
-    case x: 1
+    case 1
     with 7 show ?thesis
       by (auto simp add: norm_Pinj_0_False)
   next
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