Mon, 31 May 2010 17:27:17 -0700 Kevin Walker misc. minor stuff
Mon, 31 May 2010 13:27:24 -0700 Kevin Walker mention some other flavors of balls
Mon, 31 May 2010 12:44:19 -0700 Kevin Walker converting sphere axiom to a proposition; still need to make similar changes in module axioms
(0) -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 tip