Whittaker functions for Steinberg representations of $GL(n)$ over a $p$-adic field

Ehud Moshe Baruch, Markos Karameris

Let $G=G{L}_n(F)$ and let $({\pi }_{St},V)$ be a (generalized) Steinberg representation of $G$. It is well known that the space of Iwahori fixed vectors in $V$ is one dimensional. The I…