Wed, 06 Mar 2013 14:10:07 +0100 nipkow added lemma
Wed, 06 Mar 2013 12:17:52 +0100 nipkow extended numerals
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip