Timeline for Topology where surjective morphisms of finite presentation are coverings
Current License: CC BY-SA 3.0
2 events
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| Jun 27, 2017 at 18:54 | comment | added | Leonid Positselski | I should add that the very flatness is a nontrivial property quite different from (stronger than) flatness. E.g., the projective dimension of any very flat module over a commutative ring does not exceed 1. Rational numbers are not a very flat module over the integers. | |
| Jun 27, 2017 at 15:26 | history | asked | Leonid Positselski | CC BY-SA 3.0 |