Timeline for Proof of the ''trangression theorem''
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 4, 2011 at 21:41 | comment | added | Eric Wofsey | For purposes of dualizing, any homology class in $H_n(X)$ is pushed forward from a homology class of a space $Y$ such that $H_n(Y)$ is finitely generated and free (proof: glue together the simplices that make up the chain in $X$ to obtain an $n$-dimensional complex $Y$). The dualizing argument should then work on $Y$, and by naturality you then get the result for $X$. | |
| Mar 4, 2011 at 19:24 | comment | added | Johannes Ebert | I had this argument in mind. However, I was unable to make the step "follow by duality" precise. | |
| Mar 4, 2011 at 17:11 | history | answered | Eric Wofsey | CC BY-SA 2.5 |