src/ZF/AC/WO1_WO7.thy
changeset 13339 0f89104dd377
parent 12820 02e2ff3e4d37
child 16417 9bc16273c2d4
--- a/src/ZF/AC/WO1_WO7.thy	Wed Jul 10 16:07:52 2002 +0200
+++ b/src/ZF/AC/WO1_WO7.thy	Wed Jul 10 16:54:07 2002 +0200
@@ -52,7 +52,7 @@
 apply (unfold wf_on_def wf_def)
 apply (drule nat_le_infinite_Ord [THEN le_imp_subset], assumption)
 apply (rule notI)
-apply (erule_tac x = "nat" in allE, blast)
+apply (erule_tac x = nat in allE, blast)
 done
 
 lemma converse_Memrel_not_well_ord: