Sat, 15 Jan 2011 21:16:15 +0000 Christian Urban subst also works now
Sat, 15 Jan 2011 20:24:16 +0000 Christian Urban nominal_function works now completely for frees and depth; still a propbelm with subst; no unproved assumptions
Fri, 14 Jan 2011 14:22:25 +0000 Christian Urban strengthened renaming lemmas
(0) -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 tip