Thu, 11 Apr 2019 17:16:03 +0100 merge plus tidied three proofs
paulson <lp15@cam.ac.uk> [Thu, 11 Apr 2019 17:16:03 +0100] rev 70128
merge plus tidied three proofs
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 tip