Timeline for What is an example of a cokernel $B/\phi(A)$ in group schemes which does not have $A=\mu_d$ and requires the fppf topology to be a sheaf?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 18, 2019 at 8:37 | history | edited | Catherine Ray | CC BY-SA 4.0 |
added 52 characters in body
|
| Feb 5, 2019 at 19:29 | history | edited | Catherine Ray | CC BY-SA 4.0 |
added 218 characters in body
|
| Feb 5, 2019 at 19:19 | comment | added | Catherine Ray | @LaurentMoret-Bailly edited, hopefully this is clearer | |
| Feb 5, 2019 at 19:19 | history | edited | Catherine Ray | CC BY-SA 4.0 |
added 206 characters in body; edited body
|
| Feb 5, 2019 at 18:51 | comment | added | Jason Starr | For $S$ a scheme over a characteristic $p$ field $k$, there is a short exact sequence of fppf sheaves as follows (I think this is what you are asking): $$0 \to \alpha_{p,S} \to \mathbb{G}_{a,S} \xrightarrow{(\bullet)^p} \mathbb{G}_{a,S} \to 0.$$ | |
| Feb 5, 2019 at 18:49 | comment | added | Laurent Moret-Bailly | Can you clarify (a)? | |
| Feb 5, 2019 at 18:45 | history | asked | Catherine Ray | CC BY-SA 4.0 |