2 problems

Let $G$ be a connected complex reductive group, let $S$ be a birational sequence, and choose a weighted lexicographic ordering associated with $S$. The resulting essential monoid r…

Let $\Lambda_{\mathbb R}$ be the real weight space, let $\Lambda^+_{\mathbb R}$ be its positive cone, and let $\mathcal C_{(>,S)}\subset\Lambda_{\mathbb R}\times\mathbb R^N$ be the…