Timeline for conditions on a morphism $f:X\rightarrow Y$ to ensure $X$ is reduced, given $Y$ is reduced?
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 19, 2020 at 15:09 | comment | added | Laurent Moret-Bailly | With these assumptions, the answer is no: take $X=Y\amalg Z$ where $Z$ is an non-reduced closed subscheme of $Y$. | |
| Jul 19, 2020 at 11:43 | answer | added | Bernie | timeline score: 3 | |
| Jul 19, 2020 at 8:55 | history | asked | Hajime_Saito | CC BY-SA 4.0 |