Timeline for Is a birational morphism between normal projective varieties residually separable?
Current License: CC BY-SA 4.0
5 events
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| Jul 28, 2019 at 7:36 | comment | added | Carot | Ok thank you! I wasn't loking for something this simple because I thought my idea worked on closed points. I will have to find a way around it then. | |
| Jul 28, 2019 at 5:49 | comment | added | Laurent Moret-Bailly | New contributor, welcome! Take $Y=\mathbb{P}^2$, and $f=$ the bolwing-up at a rational point $y$. Then $f^{-1}(y)\cong \mathbb{P}^1$ which contains plenty of points with inseparable residue field. | |
| Jul 27, 2019 at 18:08 | history | edited | Martin Sleziak |
Removed the deprecated (abstract-algebra) tag - see the tag info: https://mathoverflow.net/tags/abstract-algebra/info (if there are some other suitable tags, choose them instead.)
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| Jul 27, 2019 at 15:45 | review | First posts | |||
| Jul 27, 2019 at 16:07 | |||||
| Jul 27, 2019 at 15:44 | history | asked | Carot | CC BY-SA 4.0 |