arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.02743math.RTmath.CTmath.GR
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群划分范畴

Group partition categories

Samuel Nyobe Likeng, Alistair Savage

摘要:

对于每个群$G$,我们关联一个线性么半群范畴$\mathcal{P}\mathit{ar}(G)$,我们称之为群划分范畴。我们给明确的基的态射空间,也是一个有效的介绍类别的发电机和关系。然后,我们定义了一个嵌入的$\mathcal{P}\mathit{ar}(G)$到群海森堡范畴相关的$G$。这种嵌入将两个范畴在$G$的圈积模上的自然作用交织在一起。最后证明了$\mathcal{P}\mathit{ar}(G)$的可加Karoubi包络等价于Knop引入的一个圈积插值范畴,从而给出了该范畴的一个简单具体的描述.

英文摘要:

To every group $G$ we associate a linear monoidal category $\mathcal{P}\mathit{ar}(G)$ that we call a group partition category. We give explicit bases for the morphism spaces and also an efficient presentation of the category in terms of generators and relations. We then define an embedding of $\mathcal{P}\mathit{ar}(G)$ into the group Heisenberg category associated to $G$. This embedding intertwines the natural actions of both categories on modules for wreath products of $G$. Finally, we prove that the additive Karoubi envelope of $\mathcal{P}\mathit{ar}(G)$ is equivalent to a wreath product interpolating category introduced by Knop, thereby giving a simple concrete description of that category.

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