2 problems

Let $Y_{geq 0}$ be the totally nonnegative part of the Peterson variety in type A, equipped with its cell decomposition. Rietsch's cube conjecture. As a cell-decomposed space,…

Let $n$ be a positive integer, let $K\subseteq J\subseteq [n-1]$, and let $E_{K,J}$ be the face of the standard cube $[0,1]^{n-1}$ defined by … Write $\operatorname{Int}(E_{K,J})$…