Abstract

This paper defines the partition algebra for complex reflection group $G(r,p,n)$ acting on $k$-fold tensor product $(\mathbb{C}^n)^{\otimes k}$, where $\mathbb{C}^n$ is the reflection representation of $G(r,p,n)$. A basis of the centralizer algebra of this action of $G(r,p,n)$ was given by Tanabe and for $p =1$, the corresponding partition algebra was studied by Orellana. We also establish a subalgebra as partition algebra of a subgroup of $G(r,p,n)$ acting on $(\mathbb{C}^n)^{\otimes k}$. We call these algebras as Tanabe algebras. The aim of this paper is to study representation theory of Tanabe algebras: parametrization of their irreducible modules, and construction of Bratteli diagram for the tower of Tanabe algebras. We conclude the paper by giving Jucys-Murphy elements of Tanabe algebras and their actions on the Gelfand-Tsetlin basis, determined by this multiplicity free tower, of irreducible modules.

Highlights

  • The aim of this paper is to study representation theory of Tanabe algebras: parametrization of their irreducible modules, and construction of Bratteli diagram for the tower of Tanabe algebras

  • The symmetric group Sk acts on the k- fold tensor product V ⊗k of the n-dimensional vector space V = Cn over the field of complex numbers C

  • The general linear group GLn(C) acts on V ⊗k diagonally where V is the defining representation of GLn(C). These two actions commute; they generate the centralizers of each other. This is known as the classical Schur–Weyl duality [6]

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Summary

Introduction

Orellana [19] defined a subalgebra Tk(n, r) of partition algebra CAk(n), and proved Schur–Weyl duality between Tk(n, r) and G(r, 1, n) [19, Theorem 5.4]. She recursively constructed the Bratteli diagram for the tower of algebras. We define a subalgebra, denoted by Tk(r, p, n), of partition algebra CAk(n) such that there is Schur–Weyl duality between Tk(r, p, n) and the complex reflection group G(r, p, n). And (ii) we index the components in a w-tuple from 1, . . . , w, for a multiple t of w, the t(mod w)-th component means the w-th component

Preliminaries
Tanabe algebra
Define
Complex reflection groups
Findings
Bratteli diagram of Tanabe algebras
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