K. N. Raghavan

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math.RT2026

Kostant--Kumar modules: presentation and multiplicities

Manika Gupta, K. N. Raghavan, Sankaran Viswanath

Kostant--Kumar modules $K (λ, w, μ)$ are submodules of a tensor product $V (λ) \otimes V (μ)$ of irreducible highest weight modules over a symmetrizable Kac--Moody algebra, indexed by We…

math.RT2025

Kronecker Coefficients and Simultaneous Conjugacy Classes

Jyotirmoy Ganguly, Digjoy Paul, Amritanshu Prasad +2

A Kronecker coefficient is the multiplicity of an irreducible representation of a finite group $G$ in a tensor product of irreducible representations. We define Kronecker Hecke alg…

math.RT2024

Crystals for Kostant-Kumar modules of $sl_{2}$

Mrigendra Singh Kushwaha, K. N. Raghavan, Sankaran Viswanath

We consider the affine Lie algebra $sl_{2}$ and the Kostant-Kumar submodules of tensor products of its level 1 highest weight integrable representations. We cons…

Kostant--Kumar modules: presentation and multiplicities

Kronecker Coefficients and Simultaneous Conjugacy Classes

Crystals for Kostant-Kumar modules of sl2​​

Crystals for Kostant-Kumar modules of $sl_{2}$