Classification of irreducible completely splittable representations of affine Hecke-Clifford superalgebras at roots of unity, giving necessary and sufficient conditions for semisimplicity of the finite version: semisimple iff h > n (h odd) or h > 2n (h even).
On the semisimplicity and Schur elements of (super)symmetric superalgebras
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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 $\mathcal{H}^{f}_{\mathbb{K}}$. As applications, we prove that two trace functions $\gimel_n$ and $t_{1,n}$ on the Hecke-Clifford superalgebra, which are defined in different ways, are proportional. We give a semisimplicity criterion for $\mathcal{H}^{f}_{\mathbb{K}}$ when it is (super)symmetric. We also derive semisimplicity criteria for cyclotomic quiver Hecke superalgebras of types $A^{(1)}_{e}$, $C^{(1)}_{e}$, $A^{(2)}_{2e}$ and $D^{(2)}_{e+1}$.
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Representations of Hecke-Clifford superalgebras at roots of unity
Classification of irreducible completely splittable representations of affine Hecke-Clifford superalgebras at roots of unity, giving necessary and sufficient conditions for semisimplicity of the finite version: semisimple iff h > n (h odd) or h > 2n (h even).