Timeline for Flatness over non-reduced schemes
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| May 12 at 16:17 | history | edited | Qing Liu | CC BY-SA 4.0 |
added 557 characters in body
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| Jul 30, 2020 at 9:41 | comment | added | Damien Robert | I think this is only true for $R$ and $B$ local rings. To reduce to the local case, we need that $f$ is regular in $B/(n \cap R)B$ for all maximal ideal $n$ of $B$, cf Matsumura, Commutative Ring Theory, Theorem 22.6. | |
| Feb 27, 2010 at 21:10 | history | answered | Qing Liu | CC BY-SA 2.5 |