Timeline for Top chern class in positive characteristic
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 12, 2011 at 15:18 | vote | accept | Jesko Hüttenhain | ||
| Nov 11, 2011 at 21:57 | comment | added | Matt | Ah, thanks. I should have thought of that. | |
| Nov 11, 2011 at 19:05 | comment | added | Donu Arapura | I don't think this is too much of a problem. The top Chern class can be understood as an element of the Chow group $CH^n(X)=CH_0(X)$, which maps to $\mathbb{Z}$ by degree. The Chern classes with values in the other cohomologies factors through this as well. | |
| Nov 11, 2011 at 18:57 | answer | added | Torsten Ekedahl | timeline score: 12 | |
| Nov 11, 2011 at 18:52 | comment | added | Matt | There are several choices of what you mean by "top chern class". I don't know enough to know if they all give the same answer, but in positive characteristic there isn't just one obvious cohomology theory people mean. Should we pick an $\ell \neq p$ and use $\ell$-adic cohomology, or crystalline cohomology, etc? | |
| Nov 11, 2011 at 17:17 | history | asked | Jesko Hüttenhain | CC BY-SA 3.0 |