Timeline for Global sections of G/B and G/P
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 13, 2016 at 10:33 | vote | accept | Pitor | ||
| Aug 13, 2016 at 10:31 | comment | added | Pitor | No, I will assume P to be a proper parabolic subgroup of G. | |
| Aug 12, 2016 at 22:17 | comment | added | Jim Humphreys | @Pitor: Do you allow $P$ to equal $G$? That is technically possible for a parabolic subgroup. | |
| Aug 12, 2016 at 13:10 | answer | added | Allen Knutson | timeline score: 1 | |
| Aug 12, 2016 at 11:19 | comment | added | Jason Starr | The morphism from $G/B$ to $G/P$ is rational. The derived pushforward of the structure sheaf of $G/B$ is naturally equivalent to the (complex supported in degree $0$ of the) structure sheaf of $G/P$. Combine this with the projection formula. | |
| Aug 12, 2016 at 7:08 | comment | added | Sasha | Use the projection formula. | |
| Aug 12, 2016 at 7:05 | comment | added | Wilberd van der Kallen | The fiber is $P/B$. | |
| Aug 12, 2016 at 5:00 | review | First posts | |||
| Aug 12, 2016 at 5:40 | |||||
| Aug 12, 2016 at 4:55 | history | asked | Pitor | CC BY-SA 3.0 |