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arXiv 1802.02773math.RT
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广义标准Auslander-Reiten分支的结构和同调性质

The structure and homological properties of generalized standard Auslander-Reiten components

Piotr Malicki, Andrzej Skowroński

摘要:

本文描述了Artin代数的任意广义标准Auslander-Reiten分支的结构和同调性质。特别是,我们证明了,但所有的,但在这些组件的不可分解模的欧拉示性数的定义和非负的。此外,我们提供了一个方便的标准的无限Auslander-Reiten组件的artin代数是广义标准。我们还解决了长期存在的开放问题,关于结构的artin代数允许一个分离家庭的Auslander-Reiten组件。

英文摘要:

We describe the structure and homological properties of arbitrary generalized standard Auslander-Reiten components of artin algebras. In particular, we prove that for all but finitely many indecomposable modules in such components the Euler characteristic is defined and nonnegative. Further, we provide a handy criterion for an infinite Auslander-Reiten component of an artin algebra to be generalized standard. We solve also the long standing open problem concerning the structure of artin algebras admitting a~separating family of Auslander-Reiten components.

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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