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arXiv 1702.02425math.CTmath.QAmath.RT
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有限张量范畴的积分

Integrals for finite tensor categories

Kenichi Shimizu

摘要:

利用有限张量范畴$\mathcal{C}$与其Drinfeld中心$\mathcal{Z}(\mathcal{C})$之间的某种联系,引入了有限张量范畴$\mathcal{C}$的范畴积分和范畴余积分的概念.如果$\mathcal{C}$是$H$的表示范畴,则这些概念可以用有限维霍普夫代数$H$的积分和余积分来表示.将有限维霍普夫代数的积分和余积分的基本结果(如存在性、唯一性和Maschke定理)推广到有限张量范畴.受Lorenz结果的启发,我们还研究了范畴积分和态射通过投射对象分解的关系。最后,我们将Kashina,Montgomery和Ng引入的有限维霍普夫代数的第$n$个指标推广到有限张量范畴.

英文摘要:

We introduce the notions of categorical integrals and categorical cointegrals of a finite tensor category $\mathcal{C}$ by using a certain adjunction between $\mathcal{C}$ and its Drinfeld center $\mathcal{Z}(\mathcal{C})$. These notions can be identified with integrals and cointegrals of a finite-dimensional Hopf algebra $H$ if $\mathcal{C}$ is the representation category of $H$. We generalize basic results on integrals and cointegrals of a finite-dimensional Hopf algebra (such as the existence, the uniqueness, and the Maschke theorem) to finite tensor categories. Motivated by results of Lorenz, we also investigate relations between categorical integrals and morphisms factoring through projective objects. Finally, we extend the $n$-th indicator of a finite-dimensional Hopf algebra introduced by Kashina, Montgomery and Ng to finite tensor categories.

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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