On the Face Map of the Admissible Set With Iwahori Level

Qingchao Yu

To each face $\mathcal{F}$ of the coweight polytope ${\mathcal{P}}_{\mu }$, we associate a subset $\text{Adm}(\mu {)}_{\mathcal{F}}$ of the $\mu$-admissible set $\text{Adm}(\mu )$, which we refer t…