Fri, 30 Apr 2010 14:21:18 +0100 added eqvt-lemmas for Bex, Ball and Union
Christian Urban <urbanc@in.tum.de> [Fri, 30 Apr 2010 14:21:18 +0100] rev 2002
added eqvt-lemmas for Bex, Ball and Union
(0) -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 tip