Timeline for Automorphism groups of general type varieties
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Jan 22, 2013 at 6:26 | vote | accept | anon | ||
| Jan 21, 2013 at 16:55 | answer | added | Angelo | timeline score: 8 | |
| Jan 21, 2013 at 14:08 | answer | added | Jason Starr | timeline score: 5 | |
| Jan 21, 2013 at 13:51 | comment | added | anon | I think the automorphism functor is representable by a finite type group scheme since $K_X$ is ample (look at the action on sections of $K_X^n$). Also, $\mathrm{Aut}(X)$ is always represented by a locally finitely presented group scheme for $X$ projective (look inside the Hilbert scheme of $X \times X$), so "reducedness" makes sense. However, I don't want to worry about these issues too much here, so I'm happy to take reducedness to mean that $H^0(X,T_X) = 0$. | |
| Jan 21, 2013 at 12:38 | comment | added | YCor | What does "reduced" mean (for the automorphism group)? Is it always a group scheme in a natural way (in which case I understand what "reduced" means)? | |
| Jan 21, 2013 at 11:38 | history | asked | anon | CC BY-SA 3.0 |