Timeline for isogenies between elliptic curves with multiplicative reduction
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 6, 2020 at 8:51 | vote | accept | Joey van Langen | ||
| Mar 31, 2020 at 10:22 | comment | added | Chris Wuthrich | You are absolutely right. This is up to automorphisms that fix the kernel. Luckily our curves only have $\pm 1$ as automorphisms. | |
| Mar 31, 2020 at 8:43 | comment | added | Joey van Langen | You seem to use that every isogeny is uniquely determined by its kernel, but I can multiply any isogeny with a degree 1 endomorphism to get an isogeny with the same kernel, but maybe different eigenvalues. For example replace $ \phi $ by $ - \phi $. | |
| Mar 31, 2020 at 7:13 | vote | accept | Joey van Langen | ||
| Mar 31, 2020 at 8:43 | |||||
| Mar 30, 2020 at 15:34 | history | edited | Chris Wuthrich | CC BY-SA 4.0 |
added 38 characters in body
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| Mar 30, 2020 at 13:36 | history | answered | Chris Wuthrich | CC BY-SA 4.0 |