Fri, 11 Feb 2011 13:30:37 +0000 included comments by Xingyuan
urbanc [Fri, 11 Feb 2011 13:30:37 +0000] rev 98
included comments by Xingyuan
Fri, 11 Feb 2011 12:13:35 +0000 slightly streamlined the proof
urbanc [Fri, 11 Feb 2011 12:13:35 +0000] rev 97
slightly streamlined the proof
Thu, 10 Feb 2011 21:00:40 +0000 simplified a bit the proof
urbanc [Thu, 10 Feb 2011 21:00:40 +0000] rev 96
simplified a bit the proof
(0) -30 -10 -3 +3 +10 +30 +100 tip