V. Stukopin

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math.QA2026

R-matrix via Hasse diagrams

Nikita Kryazhevskikh, Andrey Mudrov, Vladimir Stukopin

We calculate the R-matrix for the exceptional Lie superalgebra $d (2, 1; κ)$ in the smallest representation of its quantum supergroup, using a method of Hasse diagrams.

math.QA2025

Coproducts for affine super-Yangian and Weyl groupoid action

Vasiliy Volkov, Vladimir Stukopin

For affine special linear superalgebra $s l (m ∣ n, Π)$ defined by an arbitrary system of simple roots $Π$ we define the affine super Yangian $Y_{\hbar}(\widehat{sl}(m|n, Π))…