Mon, 19 Sep 2016 20:07:39 +0200 fleury # after multiset intersection and union symbol
Mon, 19 Sep 2016 20:06:21 +0200 fleury left_distrib ~> distrib_right, right_distrib ~> distrib_left
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 tip