Wed, 21 Apr 2010 16:25:24 +0200 Christian Urban merged
Wed, 21 Apr 2010 16:25:00 +0200 Christian Urban deleted the incomplete proof about pairs of abstractions
Wed, 21 Apr 2010 16:24:18 +0200 Christian Urban added a variant of the induction principle for permutations
(0) -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 tip