arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1611.03280math.AC
收藏

交换诺特环剩余域中系数为Ext和Tor的刚性

Rigidity of Ext and Tor with coefficients in residue fields of a commutative noetherian ring

Lars Winther Christensen, Srikanth B. Iyengar, Thomas Marley

摘要:

设p是交换诺特环R中的素理想。证明了:若R-模M对n个\geq dim R_p满足Tor ^R_n(k(p),M)= 0,其中k(p)是p处的剩余域,则Tor ^R_i(k(p),M)= 0对所有i个\geq n成立.证明了关于Ext_R ^*(k(p),M)的相似刚性结果,并探讨了其在同调维数理论中的应用.

英文摘要:

Let p be a prime ideal in a commutative noetherian ring R. It is proved that if an R-module M satisfies Tor^R_n(k(p),M) = 0 for some n \geq dim R_p, where k(p) is the residue field at p, then Tor^R_i(k(p),M) = 0 holds for all i \geq n. Similar rigidity results concerning Ext_R^*(k(p),M) are proved, and applications to the theory of homological dimensions are explored.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑