中文

对偶复形由其环扩张:Tachikawa 猜想的交换版本

交换代数 2007-05-23 v2

摘要

(R,\fm,k)(R,\fm,k) 为具有对偶复形 \duaR\dua R 的交换诺特局部环,其正规化条件为 \ExtR\depth(R)(k,\duaR)k\Ext^{\depth(R)}_R(k,\dua R)\cong k。部分受 Tachikawa 关于有限秩(未必交换)kk-代数的一个长期未解猜想的启发,我们猜想若对所有 n>0n>0\ExtRn(\duaR,R)=0\Ext^n_R(\dua R,R)=0,则 RR 为 Gorenstein 环,并在若干重要情形中证明了该猜想。

关键词

引用

@article{arxiv.math/0208172,
  title  = {Extensions of a Dualizing Complex by its Ring: Commutative Versions of a Conjecture of Tachikawa},
  author = {L. L. Avramov and R. -O. Buchweitz and L. M. Sega},
  journal= {arXiv preprint arXiv:math/0208172},
  year   = {2007}
}

备注

18 pages, to appear in Journal of Pure and Appl. Algebra. Following the comments of the referee, we removed the old section 6 and added a new section 1