Thu, 04 Oct 2018 10:35:29 +0200 simplified proofs
nipkow [Thu, 04 Oct 2018 10:35:29 +0200] rev 69117
simplified proofs
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 tip