Timeline for extensions, abelian varieties, $\mathbb{G}_m$
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Jun 15, 2020 at 7:27 | history | edited | CommunityBot |
Commonmark migration
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| May 10, 2011 at 13:06 | comment | added | SGP | @Pete: Thanks for the comment. @Ekedahl: You are right, I misspoke! Thanks for clarifying! | |
| May 10, 2011 at 5:41 | answer | added | Torsten Ekedahl | timeline score: 20 | |
| May 10, 2011 at 4:18 | comment | added | Torsten Ekedahl | How, does Chevalley's theorem imply this? I can see how it implies that the extension splits after pulling back along some $n$'th power map $\mathbb{G}_m \to \mathbb{G}_m$ but not that it is actually trivial. | |
| May 10, 2011 at 4:07 | comment | added | Pete L. Clark | I would have thought that Chevalley's theorem on the structure of connected algebraic groups would be an ideal answer to the question. To me, it seems easier than trying to compute an Ext group... | |
| May 10, 2011 at 1:45 | history | asked | SGP | CC BY-SA 3.0 |