Mon, 11 Jun 2018 20:45:51 +0200 nipkow tuned def. of del and proved preservation of rbt (finally)
Mon, 11 Jun 2018 16:29:38 +0200 nipkow merged
Mon, 11 Jun 2018 16:29:27 +0200 nipkow tuned order of arguments
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 tip