2 problems

Let $\mathcal{M}_{n,k}$ be the momentum amplituhedron. For a Grassmannian graph $G$, let $\Phi^\circ_G$ be the associated stratum, and let $\dim_{\mathcal{M}}(F)$ denote the dimens…

Let $\mathcal{M}_{n,k}$ be the momentum amplituhedron, and let $\mathcal{S}_{n,k}$ consist of the decorated permutations whose strata are boundary strata, together with the decorat…