Timeline for Jacobians $\mathbb{F}_q$-isogenous to the direct square of an ordinary elliptic $\mathbb{F}_q$-curve of $j$-invariant $0$
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Apr 14, 2021 at 11:48 | comment | added | Dimitri Koshelev | Thanks @BenSmith. What about $(n,n)$-isogenies ($n > 2$) over $\mathbb{F}_q$ if $\sqrt{b}, \sqrt[3]{b} \not\in \mathbb{F}_q$ ? | |
| Apr 14, 2021 at 10:06 | comment | added | Ben Smith | Thanks @FelipeVoloch, I forgot about the possible twist! The couple of examples I tried as a sanity check had b nonsquare but (unluckily) cubic. | |
| Apr 14, 2021 at 10:03 | history | edited | Ben Smith | CC BY-SA 4.0 |
added 258 characters in body
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| Apr 13, 2021 at 22:36 | comment | added | Felipe Voloch | hyperellcharpoly(Mod(1,13)*(x^6+2)) = x^4 + 12*x^3 + 61*x^2 + 156*x + 169 hyperellcharpoly(Mod(1,13)*(x^3+2))^2 = x^4 + 10*x^3 + 51*x^2 + 130*x + 169 | |
| Apr 13, 2021 at 11:36 | history | answered | Ben Smith | CC BY-SA 4.0 |