Timeline for why do automorphisms preserve ample divisors?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 6, 2014 at 16:01 | answer | added | abx | timeline score: 10 | |
| Mar 6, 2014 at 15:59 | review | Close votes | |||
| Mar 6, 2014 at 16:19 | |||||
| Mar 6, 2014 at 15:54 | comment | added | beginigeb | Sorry I forgot to say $X$ is a hypersurface | |
| Mar 6, 2014 at 15:54 | review | First posts | |||
| Mar 6, 2014 at 15:57 | |||||
| Mar 6, 2014 at 15:53 | history | edited | beginigeb | CC BY-SA 3.0 |
added 5 characters in body
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| Mar 6, 2014 at 15:42 | comment | added | Jack Huizenga | Consider $\mathbb{P}^1\times \mathbb{P}^1$ embedded by an "unbalanced" divisor. The involution does not act trivially on the divisor. | |
| Mar 6, 2014 at 15:41 | comment | added | Jérémy Blanc | There is no reason, except in the case where the embedding is canonical or anticanonical. Think for example to a cubic curve in $\mathbb P^2$ | |
| Mar 6, 2014 at 15:38 | history | asked | beginigeb | CC BY-SA 3.0 |