2 problems

Let $X^{{\mathcal P},{\mathcal Q}}_{c,d}$ be a generalized Steinberg variety, and let $e_c\in\mathbb{Q}W_P$ and $e_d\in\mathbb{Q}W_Q$ be primitive idempotents associated with the c…

A generalized Steinberg variety $X^{{\mathcal P},{\mathcal Q}}_{c,d}$ is associated with nilpotent adjoint orbits in $\operatorname{Lie}(P/U_P)$ and $\operatorname{Lie}(Q/U_Q)$, de…