Fri, 11 Feb 2011 12:13:35 +0000 urbanc slightly streamlined the proof
Thu, 10 Feb 2011 21:00:40 +0000 urbanc simplified a bit the proof
Thu, 10 Feb 2011 13:10:16 +0000 urbanc more things
(0) -30 -10 -3 +3 +10 +30 +100 tip