Timeline for In practice, how explicitly can we describe a Galois representation?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Aug 2, 2022 at 13:33 | comment | added | Qiaochu Yuan | Seems to me like a benefit of this point of view is that the construction of the absolute Galois group requires some use of choice but constructing and discussing functors on étale algebras requires no choice (that I know of). | |
| Aug 2, 2022 at 9:13 | comment | added | Neil Strickland | For example, given an elliptic curve $E$ you can consider the Galois representation $E(\overline{K})$ or the functor $A\mapsto E(A)$. | |
| Aug 2, 2022 at 8:54 | comment | added | Kim | This sounds like an interesting interpretation. Could you elaborate with an example of an $X$ where we can see an explicit $FX$ and $Y$? | |
| Aug 2, 2022 at 8:46 | history | answered | Neil Strickland | CC BY-SA 4.0 |