Flatness and localization over monoids
✍ Scribed by Bo Stenström
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 983 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Let R be a local ring order, i.e. a one-dimensional local (noetherian) ring whose completion R is reduced, and let M be a finitely generated R-module. We consider two monoids: +(M), which consists of the isomorphism classes of R-modules which arise as direct summands of direct sums of finitely many
We prove the equivalence between flatness of a complex algebraic map to a smooth variety of dimension n and torsion freeness of its nth fibered power, under the assumption that the source space is of pure dimension. This generalizes the corresponding result for finite maps due to Auslander and prove
In this paper, we analyze ramification in the sense of Abbes-Saito of a finite flat group scheme over the ring of integers of a complete discrete valuation field of mixed characteristic (0, p). We deduce that its Galois representation depends only on its reduction modulo explicitly computed p-power.