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arXiv 1607.05965math.RTmath.RA
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关于表示有限的性别对称双代数

On representation-finite gendo-symmetric biserial algebras

Aaron Chan, Rene Marczinzik

摘要:

Gendo-对称代数是由Fang和Koenig作为对称代数的推广而引入的。也就是说,它们是对称代数上生成元的自同态环。本文研究了表示有限性别对称双代数的各种代数和同调性质。我们证明了这些gendo-对称代数所对应的对称代数是Brauer树代数,并利用Brauer树组合对生成元进行了分类.我们还研究了由Hu和Xi引入的表示有限性别对称双代数之间的几乎$ν$ -稳定的导出等价。我们分类这些代数几乎$ν$ -稳定的派生等价表明,每个等价类的代表可以选择作为一个布劳尔星与一些额外的组合。我们还计算了这些代数的主导,全球和Gorenstein尺寸。特别地,我们发现表示有限的性别对称双代数总是Iwanaga-Gorenstein代数。

英文摘要:

Gendo-symmetric algebras were introduced by Fang and Koenig as a generalisation of symmetric algebras. Namely, they are endomorphism rings of generators over a symmetric algebra. This article studies various algebraic and homological properties of representation-finite gendo-symmetric biserial algebras. We show that the associated symmetric algebras for these gendo-symmetric algebras are Brauer tree algebras, and classify the generators involved using Brauer tree combinatorics. We also study almost $ν$-stable derived equivalences, introduced by Hu and Xi, between representation-finite gendo-symmetric biserial algebras. We classify these algebras up to almost $ν$-stable derived equivalence by showing that the representative of each equivalence class can be chosen as a Brauer star with some additional combinatorics. We also calculate the dominant, global, and Gorenstein dimensions of these algebras. In particular, we found that representation-finite gendo-symmetric biserial algebras are always Iwanaga-Gorenstein algebras.

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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