Timeline for every involution of an Enriques surface is
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 5, 2011 at 17:38 | comment | added | Torsten Ekedahl | That is just the Euler characteristic of the structure sheaf. | |
| Sep 5, 2011 at 17:23 | comment | added | user13559 | Thanks and what is $\chi(\mathcal{O}_X)$. You please just tell the name and I will search. Thanks | |
| Sep 5, 2011 at 16:33 | comment | added | user13559 | Edit my last commment: I was meaning $<\tilde{\sigma}>$ instead of $<\tilde{\sigma}^2>$ | |
| Sep 5, 2011 at 16:30 | comment | added | Torsten Ekedahl | No, I am using your notation and don't use the K3 double cover at all. | |
| Sep 5, 2011 at 16:28 | vote | accept | user13559 | ||
| Sep 5, 2011 at 16:28 | comment | added | user13559 | @Torsten and Chritian: Thanks for you answer. I am only a student so let me ask some dum questions: 1.I was wondering if what do you mean by $\chi(\mathcal{O}_X)$? 2.Torsten: Do you mean $\tilde{\sigma}$ in Christians notation by $\sigma$? 3. Why $\tilde{\sigma}^2 \in <\tau>$? I know that $<\tilde{\sigma}^2>=<\tau>\times<\sigma>$ Torsten: Can you please explain your answer specifically? Thanks | |
| Sep 5, 2011 at 15:50 | vote | accept | user13559 | ||
| Sep 5, 2011 at 15:55 | |||||
| Sep 1, 2011 at 8:04 | history | edited | Torsten Ekedahl | CC BY-SA 3.0 |
added 445 characters in body
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| Sep 1, 2011 at 4:31 | comment | added | Christian Liedtke | nice! I was hoping for such a more elegant/elementary argument! | |
| Sep 1, 2011 at 4:12 | history | answered | Torsten Ekedahl | CC BY-SA 3.0 |