3 problems

Let $U$ be the unipotent radical of a Borel subgroup in a semisimple, simply connected algebraic group defined and split over $\mathbb{R}$. The totally nonnegative part of the link…

Let $f_{(i_1,\dots,i_d)}$ be one of the maps considered in the paper, let $p\in Y_w^o$, and let $\Delta((i_1,\dots,i_d),w)$ denote the corresponding subword complex. Consider the c…

Let $U$) be the unipotent radical of a Borel subgroup in a semisimple, simply connected algebraic group defined and split over $\mathbb{R}$. Let $f_{(i_1,\dots,i_d)}$ be one of the…