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arXiv 1303.4680math.AC
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关于剩余域的线性缺陷

On the linearity defect of the residue field

Liana Şega

摘要:

给定一个交换诺特局部环$R$,一个可交换生成的$R$ -模块$M$的线性缺陷,记为$\ld_R(M)$,是一个不变量,它度量了$M$及其合轨离具有线性分辨率有多远.出于一个积极的已知答案的分级情况下,我们研究的问题是否$\ld_R(k)<\infty$意味着$\ld_R(k)=0$。我们在特殊情况下给出答案,我们讨论了几种解释和改进的问题。

英文摘要:

Given a commutative Noetherian local ring $R$, the linearity defect of a finitely generated $R$-module $M$, denoted $\ld_R(M)$, is an invariant that measures how far $M$ and its syzygies are from having a linear resolution. Motivated by a positive known answer in the graded case, we study the question of whether $\ld_R(k)<\infty$ implies $\ld_R(k)=0$. We give answers in special cases, and we discuss several interpretations and refinements of the question.

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。

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