Sat, 14 Sep 2019 13:25:56 +0100 added "big" lemma
Christian Urban <urbanc@in.tum.de> [Sat, 14 Sep 2019 13:25:56 +0100] rev 356
added "big" lemma
Fri, 13 Sep 2019 17:46:44 +0100 lemma proved
Chengsong [Fri, 13 Sep 2019 17:46:44 +0100] rev 355
lemma proved
(0) -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 tip