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arXiv 1407.6544math.AC
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模的连接和Serre条件

Linkage of modules and the Serre conditions

Mohammad T. Dibaei, Arash Sadeghi

摘要:

设$R$是半完全交换诺特环,$C$是半对偶$R$ --模.讨论了有限$\gc$ -维水平连通$R$ -模上的Serre条件$(S_n)$与其连通模的某些上同调模的消失之间的关系.因此,它表明,在某些条件下,Cohen-Macaulayness保持水平连锁。

英文摘要:

Let $R$ be semiperfect commutative Noetherian ring and $C$ be a semidualizing $R$--module. The connection of the Serre condition $(S_n)$ on a horizontally linked $R$-module of finite $\gc$-dimension with the vanishing of certain cohomology modules of its linked module is discussed. As a consequence, it is shown that under some conditions Cohen-Macaulayness is preserved under horizontally linkage.

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