Timeline for Sections of the canonical bundle of a blow-up
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 2, 2011 at 16:12 | answer | added | Sándor Kovács | timeline score: 4 | |
| May 2, 2011 at 16:07 | answer | added | Karl Schwede | timeline score: 4 | |
| May 2, 2011 at 14:37 | comment | added | Torsten Ekedahl | You get a map $H^0(X,K_X)\to H^0(\hat X,K_{\hat X})$ by pulling back forms. A map in the other direction is by restriction $H^0(\hat X,K_{\hat X})\to H^0(\hat X\setminus E,K_{\hat X\setminus E})$, the isomorphism $H^0(\hat X\setminus E,K_{\hat X\setminus E})=H^0(X\setminus\{x\},K_{X\setminus\{x\}}$ and then the fact that (if $n\ge 2$, $n=1$ is trivial) $H^0(X\setminus\{x\},K_{X\setminus\{x\}}=H^0(X,K_X)$. | |
| May 2, 2011 at 13:41 | answer | added | Francesco Polizzi | timeline score: 4 | |
| May 2, 2011 at 13:31 | answer | added | Sasha | timeline score: 4 | |
| May 2, 2011 at 13:09 | history | asked | Lucas Kaufmann | CC BY-SA 3.0 |