English

On the semisimplicity and Schur elements of (super)symmetric superalgebras

Representation Theory 2026-05-07 v1

Abstract

In this paper, we use Schur elements to derive semisimplicity criteria for (super)symmetric superalgebras. We obtain a closed formula for the Schur elements of cyclotomic Hecke-Clifford superalgebras HKf\mathcal{H}^{f}_{\mathbb{K}}. As applications, we prove that two trace functions n\gimel_n and t1,nt_{1,n} on the Hecke-Clifford superalgebra, which are defined in different ways, are proportional. We give a semisimplicity criterion for HKf\mathcal{H}^{f}_{\mathbb{K}} when it is (super)symmetric. We also derive semisimplicity criteria for cyclotomic quiver Hecke superalgebras of types Ae(1)A^{(1)}_{e}, Ce(1)C^{(1)}_{e}, A2e(2)A^{(2)}_{2e} and De+1(2)D^{(2)}_{e+1}.

Keywords

Cite

@article{arxiv.2605.04745,
  title  = {On the semisimplicity and Schur elements of (super)symmetric superalgebras},
  author = {Lei Shi},
  journal= {arXiv preprint arXiv:2605.04745},
  year   = {2026}
}

Comments

42 pages. Comments welcome!