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arXiv 1608.01239math.RTmath.RA
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Auslander代数的一个新刻画

A new characterization of Auslander algebras

Shen Li, Shunhua Zhang

摘要:

设$Λ$是有限维Auslander代数.对于$Λ$ -模$M$,我们证明了$M$的投射维数至多为1当且仅当它的柱脚节点$M$的投射维数至多为1.作为应用,我们给出了Auslander代数$Λ$的一个新刻画,证明了有限维代数$Λ$是Auslander代数,只要它的整体维数gl.d\,$Λ\leq2$和内射$Λ$ -模是投射的当且仅当它的基柱的投射维数至多为1.

英文摘要:

Let $Λ$ be a finite dimensional Auslander algebra. For a $Λ$-module $M$, we prove that the projective dimension of $M$ is at most one if and only if the projective dimension of its socle soc\,$M$ is at most one. As an application, we give a new characterization of Auslander algebra $Λ$, and prove that a finite dimensional algebra $Λ$ is an Auslander algebra provided its global dimension gl.d\,$Λ\leq2$ and an injective $Λ$-module is projective if and only if the projective dimension of its socle is at most one.

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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