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src/HOL/Algebra/UnivPoly.thy
changeset 57865 dcfb33c26f50
parent 57512 cc97b347b301
child 58622 aa99568f56de 
--- a/src/HOL/Algebra/UnivPoly.thy	Tue Aug 05 16:21:27 2014 +0200
+++ b/src/HOL/Algebra/UnivPoly.thy	Tue Aug 05 16:58:19 2014 +0200
@@ -528,7 +528,7 @@
     case 0 with R show ?thesis by simp
   next
     case Suc with R show ?thesis
-      using R.finsum_Suc2 by (simp del: R.finsum_Suc add: R.r_null Pi_def)
+      using R.finsum_Suc2 by (simp del: R.finsum_Suc add: Pi_def)
   qed
 qed (simp_all add: R)
isabelle