This paper shows the polytopality of any finite type $\mathbf{g}$-vector fan, acyclic or not. In fact, for any finite Dynkin type $Γ$, we construct a universal associahedron $\mathsf{Asso}_{\mathrm{un}}(Γ)$ with the property that any $\mathbf{g}$-vector fan of type $Γ$ is the normal fan of a suitable projection of $\mathsf{Asso}_{\mathrm{un}}(Γ)$.
此内容由惯性聚合(RSS阅读器)自动聚合整理，仅供阅读参考。 原文来自 — 版权归原作者所有。