Polynomial properties of unipotent radicals of parabolic subgroups in classical groups

Qingchun Hao, Yang Yang

Let $R_u^{X,d}$ denote the unipotent radical of a (proper) maximal standard parabolic subgroup of the classical group ${\mathrm{Sp}}_{2n}(q)$, ${\mathrm{SO}}_{2n}(q)$, or $\mathrm U_{2…