src/HOL/Wellfounded.thy

--- a/src/HOL/Wellfounded.thy	Sun Mar 11 22:06:13 2012 +0100
+++ b/src/HOL/Wellfounded.thy	Mon Mar 12 15:11:24 2012 +0100
@@ -299,8 +299,7 @@
 lemma wfP_SUP:
   "\<forall>i. wfP (r i) \<Longrightarrow> \<forall>i j. r i \<noteq> r j \<longrightarrow> inf (DomainP (r i)) (RangeP (r j)) = bot \<Longrightarrow> wfP (SUPR UNIV r)"
   apply (rule wf_UN [where I=UNIV and r="\<lambda>i. {(x, y). r i x y}", to_pred])
-  apply (simp_all add: inf_set_def)
-  apply auto
+  apply simp_all
   done
 
 lemma wf_Union: