Decomposable Specht modules for the Iwahori-Hecke algebra ${\mathcal{H}}_{\mathbb{F},-1}({\mathfrak{S}}_n)$

Liron Speyer

Let $S_{\lambda }$ denote the Specht module defined by Dipper and James for the Iwahori-Hecke algebra ${\mathcal{H}}_n$ of the symmetric group ${\mathfrak{S}}_n$. When $e=2$ we determine the de…