Wed, 25 Apr 2018 16:40:29 +0100 paulson merged
Wed, 25 Apr 2018 15:36:48 +0100 paulson merged
Wed, 25 Apr 2018 15:36:29 +0100 paulson new material on matricies by Tim Makarios (from Tarskis_Geometry in the AFP)
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 tip