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arXiv 1702.00876math.RTmath.RA
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利用周期内射分解构造$n$ -角化范畴

A general construction of $n$-angulated categories using periodic injective resolutions

Zengqiang Lin

摘要:

设$\mathcal{C}$是具有自同构$Σ$的加法范畴.我们展示了如何获得$n$ -角度的$(\mathcal{C},Σ)$使用一些特定的周期内射决议。给出了$(\mathcal{C},Σ)$允许$n$ -角化的充要条件.然后我们应用这些刻画来解释$n$ -角化范畴的标准构造和由某些局部环产生的$n$ -角化范畴.此外,我们从拟周期自内射代数中得到了一类新的$n$ -角范畴的例子。

英文摘要:

Let $\mathcal{C}$ be an additive category equipped with an automorphism $Σ$. We show how to obtain $n$-angulations of $(\mathcal{C},Σ)$ using some particular periodic injective resolutions. We give necessary and sufficient conditions on $(\mathcal{C},Σ)$ admitting an $n$-angulation. Then we apply these characterizations to explain the standard construction of $n$-angulated categories and the $n$-angulated categories arising from some local rings. Moreover, we obtain a class of new examples of $n$-angulated categories from quasi-periodic selfinjective algebras.

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