Timeline for Explicit formula for the Poincare dual of a CM endomorphism of an elliptic curve
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 7, 2014 at 14:41 | vote | accept | Hugo Chapdelaine | ||
| Aug 7, 2014 at 14:41 | comment | added | Hugo Chapdelaine | Yes you are right! So this solves my question. Many thanks! | |
| Aug 6, 2014 at 23:29 | comment | added | Will Sawin | Because it counts solutions to the equation $x = E(x)$ where $E$ is multiplication by $\sqrt{-D}$. For each such $x$, $(x,x)$ is a transverse intersection point of the two curves. | |
| Aug 6, 2014 at 23:14 | comment | added | Hugo Chapdelaine | Hi @Will. I agree with everything you said except that I don't quite see why $\Delta\cdot\Gamma$ corresponds to $[(1-\sqrt{-D})^{-1}\mathcal{O}_K:\mathcal{O}_K]$ | |
| Aug 6, 2014 at 22:40 | history | answered | Will Sawin | CC BY-SA 3.0 |