Timeline for Non-representability of Weil Restriction
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 2, 2020 at 13:39 | comment | added | Laurent Moret-Bailly | For a separated example, see my answer here: mathoverflow.net/q/194326 | |
| Jun 2, 2020 at 1:43 | comment | added | Will Sawin | After writing this I came up with a probably faster proof which is to compute the base change of the Weil restriction from $\mathbb R$ to $\mathbb C$ - it's the product of the affine line with two origins with itself - and check that one of the points lying over the origin doesn't have any Galois-invariant affine-neighborhood, which it would if the scheme descended from $\mathbb C$ to $\mathbb R$. | |
| Jun 2, 2020 at 0:35 | history | answered | Will Sawin | CC BY-SA 4.0 |