Wed, 28 Jul 2010 13:39:52 -0700 diagram for producing weak identities
Scott Morrison <scott@tqft.net> [Wed, 28 Jul 2010 13:39:52 -0700] rev 498
diagram for producing weak identities
(0) -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 tip