Timeline for About blow-up of Hopf Surface in a point
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 19, 2022 at 3:45 | review | Close votes | |||
| May 26, 2022 at 3:03 | |||||
| May 18, 2022 at 22:30 | comment | added | Donu Arapura | You can compute the homology of a blow up as in pp 473-474 of Griffiths-Harris, and check that $H_1$ doesn't change. | |
| May 18, 2022 at 22:15 | comment | added | UserIn | @Donu Arapura thank you for your answer. How to prove that the first Betti number preserves? Is it truth in general case for any compact complex manifold or not? | |
| May 18, 2022 at 22:12 | comment | added | Marco Golla | It cannot even be symplectic, since there's no class in $H^2$ that has positive square. | |
| May 18, 2022 at 22:08 | comment | added | Donu Arapura | If you blow up a Hopf surface at a point, the first Betti number is still one. So it can't be Kähler. | |
| S May 18, 2022 at 21:48 | review | First questions | |||
| May 19, 2022 at 0:41 | |||||
| S May 18, 2022 at 21:48 | history | asked | UserIn | CC BY-SA 4.0 |