English

Schur--Weyl duality for twin groups

Representation Theory 2022-02-09 v2 Quantum Algebra

Abstract

The twin group TWnTW_n on nn strands is the group generated by t1,,tn1t_1, \dots, t_{n-1} with defining relations ti2=1t_i^2=1, titj=tjtit_it_j = t_jt_i if ij>1|i-j|>1. We find a new instance of semisimple Schur--Weyl duality for tensor powers of a natural nn-dimensional reflection representation of TWnTW_n, depending on a parameter qq. At q=1q=1 the representation coincides with the natural permutation representation of the symmetric group, so the new Schur--Weyl duality may be regarded as a qq-analogue of the one motivating the definition of the partition algebra.

Keywords

Cite

@article{arxiv.2105.12875,
  title  = {Schur--Weyl duality for twin groups},
  author = {Stephen Doty and Anthony Giaquinto},
  journal= {arXiv preprint arXiv:2105.12875},
  year   = {2022}
}

Comments

26 pages

R2 v1 2026-06-24T02:30:34.814Z