Kostant--Kumar modules: presentation and multiplicities

Manika Gupta, K. N. Raghavan, Sankaran Viswanath

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