Fri, 06 May 2011 16:04:22 -0700 | Kevin Walker | remark about apparent vacuity of lemma 6.1.2 (spheres) | file | diff | annotate |
Fri, 06 May 2011 15:23:26 -0700 | Kevin Walker | added more motivation for pinched products | file | diff | annotate |
Fri, 06 May 2011 15:00:46 -0700 | Kevin Walker | more on piched product union axiom | file | diff | annotate |