Timeline for Gerbes over finite fields
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Aug 1, 2023 at 7:51 | comment | added | Angelo | If the gerbe is étale, then the fact that the cohomological dimension of the Galois group is 1 does imply that it is neutralizable (see for example the proof of Lemma 4.4) in my paper with Giulio Bresciani "Fields of moduli and the arithmetic of tame quotient singularities". In the general case I am not sure how to proceed. | |
| Jul 31, 2023 at 15:25 | comment | added | Daniel Loughran | I quite like how explicit this argument is and avoids a discussion of non-abelian cohomology. Thanks! I would still be very happy to see other answers which present an alternative viewpoint on using cohomology to address this problem. | |
| Jul 31, 2023 at 13:15 | vote | accept | Daniel Loughran | ||
| Jul 30, 2023 at 6:26 | comment | added | Angelo | This is a nice argument! | |
| Jul 28, 2023 at 20:08 | comment | added | Jason Starr | There are people (strange people) who assume almost no separatedness hypotheses of their stacks. | |
| Jul 28, 2023 at 14:33 | history | edited | LSpice | CC BY-SA 4.0 |
Trivial formatting
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| Jul 28, 2023 at 14:04 | history | answered | Johan | CC BY-SA 4.0 |