Thu, 02 Sep 2010 23:11:38 -0700 Kevin Walker proof of injectivity/colimit lemma
Wed, 01 Sep 2010 13:34:21 -0700 Kevin Walker futzing with figures (\begin{center|equation} to \centering)
(0) -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 tip