Skip to main content
7 events
when toggle format what by license comment
May 1, 2014 at 0:39 vote accept David Spivak
Apr 28, 2014 at 17:33 answer added Simon Rose timeline score: 4
Apr 28, 2014 at 17:13 history edited David Spivak CC BY-SA 3.0
fixed a mistake caught by Carnahan and explained by Knutson.
Apr 28, 2014 at 15:14 comment added Allen Knutson In particular, meaning that multiplying them doesn't make much sense, even if you Poincar\'e-dualize. Adding them is reasonable though.
Apr 28, 2014 at 0:40 comment added S. Carnahan Shouldn't $\beta$ be an element of $H_2(X,\mathbb{Z})$, describing the fundamental class of the image?
Apr 27, 2014 at 20:52 history edited David Spivak CC BY-SA 3.0
Made my request a bit less restrictive: not just references, but any help.
Apr 27, 2014 at 18:35 history asked David Spivak CC BY-SA 3.0