有限同调维度的扩展模
交换代数
2026-02-11 v2
摘要
我们探讨了同调维度的有限性对 Ext 模块的影响,聚焦于射影维数、单射维数及其 Gorenstein 对等概念。在此方向上,我们建立了若干同调维数的有限性标准。在满足这些有限性条件后,本文的主要结果是关于当由规范模块张量化时,某些 Ext 模块的新型对偶性。
关键词
引用
@article{arxiv.2504.15224,
title = {On Extension modules of finite homological dimension},
author = {Rafael Holanda and Victor H. Jorge-Pérez and Victor D. Mendoza-Rubio},
journal= {arXiv preprint arXiv:2504.15224},
year = {2026}
}
备注
14 pages. Shorter version with minor corrections. Also, an addendum has been added mentioning that some posed questions have been resolved by Kaito Kimura (arXiv:2508.12843)