Timeline for How is this surface related to the square of that CM elliptic curve?
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 15, 2011 at 17:33 | comment | added | Dror Speiser | * to be more precise and consistent with the content of my question, I didn't read the whole "On the Picard-Fuchs..." paper before now, and computed the modular congruences which gave the cusp form of weight 3 by hand, as I did for the surface. I now see that the computation could have been saved had I read through... | |
| May 15, 2011 at 17:28 | comment | added | Dror Speiser | Yes, the first paper is where I got the modular form for the Kummer surface of $E\times E$, and Stienstra's next paper on the subject, "Formal groups arising from algebraic varieties", gives the modular form for the surface - namely their formal Brauer groups are the same (maybe up to a character). My question is the explicit "are these isomorphic?" (or something close), and the general "how does one check this in sage?". | |
| May 15, 2011 at 17:02 | history | answered | Denis Chaperon de Lauzières | CC BY-SA 3.0 |