--- a/LamEx.thy Fri Oct 30 15:30:33 2009 +0100
+++ b/LamEx.thy Fri Oct 30 15:32:04 2009 +0100
@@ -109,7 +109,7 @@
sorry
lemma real_alpha:
- assumes "t = ([(a,b)]\<bullet>s)" "a\<sharp>[b].s"
+ assumes "t = [(a,b)]\<bullet>s" "a\<sharp>[b].s"
shows "Lam a t = Lam b s"
sorry