Timeline for Lefschetz fixed-point theorem for the Frobenius map
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 2, 2018 at 21:47 | comment | added | David E Speyer | Whoops! You're right, of course. | |
| Jan 2, 2018 at 21:46 | comment | added | Joe Silverman | Formally, one should define $H_1(E,\mathbb Z_\ell)=T_\ell(E)$ and then define $H^1(E,\mathbb Z_\ell)$ to be the dual, ditto with $H^2$. And to get a vector space, instead of just a $\mathbb Z_\ell$-module, one needs to tensor $\otimes_{\mathbb Z_\ell}\mathbb Q_\ell$. But for computing traces, obviously, it doesn't matter which you use. | |
| Jan 2, 2018 at 21:33 | history | answered | David E Speyer | CC BY-SA 3.0 |