--- 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