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arXiv 1710.09899math.RA
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AC-Gorenstein环及其稳定模范畴

AC-Gorenstein rings and their stable module categories

James Gillespie

摘要:

我们介绍什么是AC-Gorenstein环。它是Gorenstein环的一个推广,它与Bravo-Gillespie-Hovey的Gorenstein AC-内射模和Gorenstein AC-投射模相容.它也与Bravo-Perez引入的$n$ -凝聚环的概念相容:因此一个$0$ -凝聚AC-Gorenstein环恰是Iwanaga意义下的普通Gorenstein环,而一个$1$ -凝聚AC-Gorenstein环恰是Ding-Chen环.我们证明了任何AC Gorenstein环都有一个稳定的模范畴,它是紧生成的,并且是两个Quillen等价交换模范畴结构的同伦范畴。一个是带有凝聚对象的投射模Gorenstein AC-投射模,另一个是带有凝聚对象的内射模结构Gorenstein AC-内射模。

英文摘要:

We introduce what is meant by an AC-Gorenstein ring. It is a generalized notion of Gorenstein ring which is compatible with the Gorenstein AC-injective and Gorenstein AC-projective modules of Bravo-Gillespie-Hovey. It is also compatible with the notion of $n$-coherent rings introduced by Bravo-Perez: So a $0$-coherent AC-Gorenstein ring is precisely a usual Gorenstein ring in the sense of Iwanaga, while a $1$-coherent AC-Gorenstein ring is precisely a Ding-Chen ring. We show that any AC-Gorenstein ring admits a stable module category that is compactly generated and is the homotopy category of two Quillen equivalent abelian model category structures. One is projective with cofibrant objects the Gorenstein AC-projective modules while the other is an injective model structure with fibrant objects the Gorenstein AC-injectives.

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