2 problems

Strong positivity conjecture of Mather classes. The coefficients satisfy $a_v>0$, and $a_v(t)=a_v(\alpha_1,\ldots,\alpha_r)$ is a polynomial in the positive simple roots…

Let $X=G/P$ be a cominuscule space, and let $v,w\in W^P$. Write the Mather class of the Schubert variety $X_w^P$ as … The local Euler obstruction coefficients $e_{w,v}$ are non-neg…