Sun, 09 Jan 2011 05:38:53 +0000 Christian Urban instantiated fundef_ex1_eqvt_at theorem with the indction hypothesis
Sun, 09 Jan 2011 04:28:24 +0000 Christian Urban solved subgoals for depth and subst function
(0) -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 tip