학술논문

Natural transformations between induction and restriction on iterated wreath product of symmetric group of order $2$
Document Type
Working Paper
Source
Subject
Mathematics - Representation Theory
16G99, 20C30 (Primary) 18N25, 20B35 (Secondary)
Language
Abstract
Let $\mathbb{C}\mathsf{A}_n = \mathbb{C}[S_2\wr S_2 \wr\cdots \wr S_2]$ be the group algebra of $n$-step iterated wreath product. We prove some structural properties of $\mathsf{A}_n$ such as their centers, centralizers, right and double cosets. We apply these results to explicitly write down Mackey theorem for groups $\mathsf{A}_n$ and give a partial description of the natural transformations between induction and restriction functors on the representations of the iterated wreath product tower by computing certain hom spaces of the category of $\displaystyle \bigoplus_{m\geq 0}(\mathsf{A}_m, \mathsf{A}_n)-$bimodules. A complete description of the category is an open problem.
Comment: 20 pages, to appear in Mathematical Physics, MDPI