English

On the (super)cocenter of Cyclotomic Sergeev algebras

Representation Theory 2025-11-25 v1 Group Theory

Abstract

We show that cyclotomic Sergeev algebra hng\mathfrak{h}_n^g is symmetric when the level is odd and supersymmetric when the level is even. We give an integral basis for Tr(hng)0{\rm Tr}(\mathfrak{h}_n^g)_{\overline{0}}, and recover Ruff's result on the rank of Z(hng)0ˉ{\rm Z}(\mathfrak{h}_n^g)_{\bar{0}} when the level is odd. We obtain a generating set of SupTr(hng)0{\rm SupTr}(\mathfrak{h}_n^g)_{\overline{0}}, which gives an upper bound of the dimension of Z(hng)0ˉ{\rm Z}(\mathfrak{h}_n^g)_{\bar{0}} when the level is even.

Keywords

Cite

@article{arxiv.2501.18260,
  title  = {On the (super)cocenter of Cyclotomic Sergeev algebras},
  author = {Shuo Li and Lei Shi},
  journal= {arXiv preprint arXiv:2501.18260},
  year   = {2025}
}

Comments

28 pages, comments welcome!