Timeline for Extending vector bundles on a given open subscheme, reprise
Current License: CC BY-SA 2.5
9 events
| when toggle format | what | by | license | comment | |
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| Jan 16, 2020 at 21:00 | answer | added | myzhang24 | timeline score: 4 | |
| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Oct 28, 2014 at 7:59 | vote | accept | Kevin H. Lin | ||
| Aug 17, 2010 at 14:37 | answer | added | Donu Arapura | timeline score: 23 | |
| Aug 17, 2010 at 2:29 | answer | added | Jorge Vitório Pereira | timeline score: 14 | |
| Aug 17, 2010 at 2:18 | comment | added | David Treumann | A basic obstruction is topological/cohomological: if the Chern classes of F are not in the image of $H^*(X) \to H^*(U)$, then F will not extend. Sasha gives an example where this obstruction vanishes and F still does not extend. | |
| Aug 16, 2010 at 20:15 | comment | added | Donu Arapura | Unfortunately, this won't work. The line bundle is necessarily trivial, and it so it extends to a trivial line bundle. I suspect Sasha' example really is the simplest. | |
| Aug 16, 2010 at 20:03 | answer | added | Sasha | timeline score: 30 | |
| Aug 16, 2010 at 19:38 | history | asked | Kevin H. Lin | CC BY-SA 2.5 |