Extensions of Veech groups II: Hierarchical hyperbolicity and quasi-isometric rigidity

Extensions of Veech groups II: Hierarchical hyperbolicity and quasi-isometric rigidity. https://t.co/NTz9lPRBb0

RT @mathGTb: Spencer Dowdall, Matthew G. Durham, Christopher J. Leininger, Alessandro Sisto: Extensions of Veech groups II: Hierarchical hy…

extension group is quasi-isometrically rigid. [2/2 of https://t.co/1Qn1agFWaB]

We show that for any lattice Veech group in the mapping class group $\mathrm{Mod}(S)$ of a closed surface $S$, the associated $\pi_1 S$--extension group is a hierarchically hyperbolic group. As a consequence, we prove that any such [1/2 of https://t.co/1Qn