Wed, 03 Mar 2010 19:10:40 +0100 added a lemma that permutations can be represented as sums of swapping
Christian Urban <urbanc@in.tum.de> [Wed, 03 Mar 2010 19:10:40 +0100] rev 1350
added a lemma that permutations can be represented as sums of swapping
(0) -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 tip