Wed, 14 Sep 2011 13:00:44 +0000 clarified proof about non-regularity
urbanc [Wed, 14 Sep 2011 13:00:44 +0000] rev 252
clarified proof about non-regularity
Wed, 14 Sep 2011 11:46:50 +0000 corrected typo found by Xingyuan
urbanc [Wed, 14 Sep 2011 11:46:50 +0000] rev 251
corrected typo found by Xingyuan
(0) -100 -30 -10 -2 +2 +10 +30 +100 tip