On (super)symmetrizing forms and Schur elements of cyclotomic Hecke-Clifford algebras

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Hauptverfasser: Li, Shuo, Shi, Lei
Format: Preprint
Veröffentlicht: 2025
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author Li, Shuo
Shi, Lei
author_facet Li, Shuo
Shi, Lei
contents In this paper, we introduce Schur elements for supersymmetrizing superalgebras. We show that the cyclotomic Hecke-Clifford algebra $\mathcal{H}^f_{c}(n)$ is supersymmetric if $f=f^{(\mathtt{0})}_{\underline{Q}}$ and, symmetric if $f=f^{(\mathtt{s})}_{\underline{Q}}$ and an invertibility condition holds. In the semisimple case, we compute the Schur elements for both $\mathcal{H}^f_{c}(n)$ and the cyclotomic Sergeev algebra $\mathcal{h}^g_{c}(n)$. As applications, we define new symmetrizing forms on the Hecke-Clifford algebra $\mathcal{H}(n)$ and on the cyclotomic quiver Hecke algebras of types $A^{(1)}_{e-1}$ and $C^{(1)}_e$.
format Preprint
id arxiv_https___arxiv_org_abs_2511_18395
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On (super)symmetrizing forms and Schur elements of cyclotomic Hecke-Clifford algebras
Li, Shuo
Shi, Lei
Representation Theory
20C08, 16W55, 16G99
In this paper, we introduce Schur elements for supersymmetrizing superalgebras. We show that the cyclotomic Hecke-Clifford algebra $\mathcal{H}^f_{c}(n)$ is supersymmetric if $f=f^{(\mathtt{0})}_{\underline{Q}}$ and, symmetric if $f=f^{(\mathtt{s})}_{\underline{Q}}$ and an invertibility condition holds. In the semisimple case, we compute the Schur elements for both $\mathcal{H}^f_{c}(n)$ and the cyclotomic Sergeev algebra $\mathcal{h}^g_{c}(n)$. As applications, we define new symmetrizing forms on the Hecke-Clifford algebra $\mathcal{H}(n)$ and on the cyclotomic quiver Hecke algebras of types $A^{(1)}_{e-1}$ and $C^{(1)}_e$.
title On (super)symmetrizing forms and Schur elements of cyclotomic Hecke-Clifford algebras
topic Representation Theory
20C08, 16W55, 16G99
url https://arxiv.org/abs/2511.18395