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arXiv 1805.04041math.RTmath.RA
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Jacobi代数的斜群代数

Skew group algebras of Jacobian algebras

Simone Giovannini, Andrea Pasquali

摘要:

对于具有势$(Q,W)$的有限循环群$G$,研究了Jacobi代数$Λ= \mathcal P(Q, W)$的斜群代数$ΛG$.根据Reiten和Riedtmann的一个结果,已知一个基本代数$η( ΛG) η$ Morita等价于$ΛG$的可积$Q_G$.在对$G$作用的一些假设下,我们明确地在$Q_G$上构造了一个潜在的$W_G$,使得$η(ΛG) η\cong \mathcal P(Q_G , W_G)$。然后,利用$G$的对偶群的自然作用,通过斜群代数的构造,可以恢复具有势的原群。如果$Λ$是自内射的,那么$ΛG$也是自内射的,我们研究这种情况。出于Herschend和Iyama的2-表示有限代数的特征,我们研究如何削减$(Q,W)$的行为与我们的建设。

英文摘要:

For a quiver with potential $(Q,W)$ with an action of a finite cyclic group $G$, we study the skew group algebra $ΛG$ of the Jacobian algebra $Λ= \mathcal P(Q, W)$. By a result of Reiten and Riedtmann, the quiver $Q_G$ of a basic algebra $η( ΛG) η$ Morita equivalent to $ΛG$ is known. Under some assumptions on the action of $G$, we explicitly construct a potential $W_G$ on $Q_G$ such that $η(ΛG) η\cong \mathcal P(Q_G , W_G)$. The original quiver with potential can then be recovered by the skew group algebra construction with a natural action of the dual group of $G$. If $Λ$ is self-injective, then $ΛG$ is as well, and we investigate this case. Motivated by Herschend and Iyama's characterisation of 2-representation finite algebras, we study how cuts on $(Q,W)$ behave with respect to our construction.

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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