Sun, 30 Jan 2005 20:48:50 +0100 nipkow renamed a few vars, added a lemma
Fri, 28 Jan 2005 15:44:03 +0100 nipkow proof simpification
(0) -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip