Interval hypergraphic polytopes (or deformed associahedra), Tamari interval posets, and weeping willows

Jose Bastidas, Félix Gélinas, Vincent Pilaud +3

For a hypergraph $\mathbb{H}$ on $[n]$, the hypergraphic polytope ${△}_{\mathbb{H}}$ is the Minkowski sum of the standard simplices ${△}_H$ for all $H\in \mathbb{H}$.…