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
Thu, 10 Feb 2011 13:10:16 +0000 more things
urbanc [Thu, 10 Feb 2011 13:10:16 +0000] rev 95
more things
(0) -30 -10 -2 +2 +10 +30 +100 tip