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src/HOL/Wellfounded.thy
changeset 35216 7641e8d831d2
parent 33217 ab979f6e99f4
child 35719 99b6152aedf5 
--- a/src/HOL/Wellfounded.thy	Thu Feb 18 13:29:59 2010 -0800
+++ b/src/HOL/Wellfounded.thy	Thu Feb 18 14:21:44 2010 -0800
@@ -489,7 +489,7 @@
   by (simp add: less_than_def wf_pred_nat [THEN wf_trancl])
 
 lemma trans_less_than [iff]: "trans less_than"
-  by (simp add: less_than_def trans_trancl)
+  by (simp add: less_than_def)
 
 lemma less_than_iff [iff]: "((x,y): less_than) = (x<y)"
   by (simp add: less_than_def less_eq)
isabelle