Timeline for divisors on $\overline{\mathcal{M}}_{g,n}$ that are trivial on certain $F$-curves
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 9, 2014 at 7:36 | vote | accept | IMeasy | ||
| Jan 8, 2014 at 1:27 | answer | added | Jason Starr | timeline score: 2 | |
| Jan 7, 2014 at 20:45 | comment | added | Jason Starr | This is bad form -- I should really double-check this first. However, my vague recollection is that inside $\overline{\mathcal{M}}_{g,0}$, the following divisor class, $$ D = \sum_{h=1}^{[g/2]} h(g-h) \Delta_h,$$ is zero on the $F$-curves of the form $\overline{\mathcal{M}}_{0,4}$. Clearly it is not zero on some of the $F$-curves of the form $\overline{\mathcal{M}}_{1,1}$. I will try to double-check this. If it is correct, then I will post it as an answer. | |
| Jan 7, 2014 at 18:25 | history | asked | IMeasy | CC BY-SA 3.0 |