Timeline for How do I show that a separable isogeny is central?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 27, 2014 at 15:58 | comment | added | anon | Yes, my example is wrong. | |
| Jul 27, 2014 at 14:05 | comment | added | Will Sawin | The automorphism group of an etale group scheme embeds in the scheme of morphisms from an etale scheme to an etale scheme, which is etale. | |
| Jul 27, 2014 at 14:04 | comment | added | Will Sawin | Is your example correct? It seems to me that the automorphism group of $\mathbb Z/p\mathbb Z$ is $\mathbb Z/(p-1)\mathbb Z \cong \mu_{p-1}$ and is a discrete group. | |
| Jul 27, 2014 at 12:29 | history | answered | anon | CC BY-SA 3.0 |