Wed, 21 Apr 2010 12:37:19 +0200 added an improved version of the induction principle for permutations
Christian Urban <urbanc@in.tum.de> [Wed, 21 Apr 2010 12:37:19 +0200] rev 1918
added an improved version of the induction principle for permutations
(0) -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 tip