Thu, 19 Sep 2019 16:42:27 +0200 wenzelm unused;
Thu, 19 Sep 2019 17:24:15 +0100 paulson merged
Thu, 19 Sep 2019 17:24:08 +0100 paulson Tidying and one more theorem
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 tip