中文

k[x] 单侧逆上的非分裂模扩张

环与代数 2019-09-19 v1

摘要

RR 为由两个元素 xxyy 生成并满足定义关系 yx=1yx=1 的结合 kk-代数。利用 Irving 和 Gerritzen 的结果,我们得到了 RR 上单模的完整描述。我们考察短正合列 0UEV00\rightarrow U\rightarrow E \rightarrow V\rightarrow 0,其中 UUVV 为单 RR-模。结果表明,非分裂扩张仅当 UUVV 均为一维,或在某些条件下 UU 为无限维且 VV 为一维时发生。

关键词

引用

@article{arxiv.1909.08372,
  title  = {Nonsplit module extensions over the one-sided inverse of k[x]},
  author = {Zheping Lu and Linhong Wang and Xingting Wang},
  journal= {arXiv preprint arXiv:1909.08372},
  year   = {2019}
}

备注

Accepted for publication by Involve, a journal of mathematics. The results in this paper were partially obtained from an undergraduate research project