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arXiv 2203.05500math.QAmath.CTmath.GRmath.RA
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模拟霍普夫代数与具有一个对合的群

Modular quasi-Hopf algebras and groups with one involution

Geoffrey Mason, Siu-Hung Ng

摘要:

在前一篇文章中,作者构造了一类与有限群$G$相关的拟霍普夫代数$D^ω(G, A)$,推广了扭曲量子偶构造.给出了模范畴$Rep(D^ω(G, A))$是模张量范畴的上同调充要条件.本文证明了群类$G$是\emph{contain a unique involution}的上同调条件,从而得到了一类新的模拟霍普夫代数的显式构造.我们发展了一般有限群$G$的基本理论,同时也发展了一个平行的理论,讨论了当$Rep(D^ω(G, A))$是超模而不是模时的问题。我们给出了一些涉及二元多面体群和零星单群的显式例子。

英文摘要:

In a previous paper the authors constructed a class of quasi-Hopf algebras $D^ω(G, A)$ associated to a finite group $G$, generalizing the twisted quantum double construction. We gave necessary and sufficient conditions, cohomological in nature, that the corresponding module category $Rep(D^ω(G, A))$ is a modular tensor category.\ In the present paper we verify the cohomological conditions for the class of groups $G$ which \emph{contain a unique involution}, and in this way we obtain an explicit construction of a new class of modular quasi-Hopf algebras.\ We develop the basic theory for general finite groups $G$, and also a parallel theory concerned with the question of when $Rep(D^ω(G, A))$ is super-modular rather than modular. We give some explicit examples involving binary polyhedral groups and some sporadic simple groups.

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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