Wed, 12 May 2010 15:25:23 +0200 nipkow merged
Wed, 12 May 2010 15:25:02 +0200 nipkow simplified proof
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip