赋值环的弱非分歧扩张的构造
交换代数
2022-06-13 v3 代数几何
摘要
给定赋值环 ,其剩余域为 、值群为 ,我们给出一个局部环支配 且为具有相同值群的赋值环的充分条件。当 含有一个域 时,我们将此结果应用于构造一个包含 及给定 的扩张 、具有值群 且剩余域由 与 生成的赋值环 的问题;特别地,当 或 在 上可分时,这是可能的。Given a valuation ring , with residue field and value group , we give a sufficient condition for a local ring dominating to be a valuation ring with the same value group. When contains a field , we apply this result to the problem of constructing a valuation ring containing and a prescribed extension of , with value group and residue field generated by and ; this is possible in particular when either or is separable over .
引用
@article{arxiv.1909.02917,
title = {Une construction d'extensions faiblement non ramifi\'ees d'un anneau de valuation},
author = {Laurent Moret-Bailly},
journal= {arXiv preprint arXiv:1909.02917},
year = {2022}
}
备注
11 pages, in French. Published in Rend. Sem. Mat. Univ. Padova (Online first)