Verma modules and finite-dimensional irreducible modules of the universal Askey--Wilson algebra at roots of unity

Hau-Wen Huang

Assume that $\mathbb{F}$ is an algebraically closed field and fix a nonzero scalar $q\in \mathbb{F}$ with $q^4\ne 1$. The universal Askey--Wilson algebra ${△}_q$ is a unital a…