Pattern Rigidity in Hyperbolic Spaces: Duality and PD Subgroups

Kingshook Biswas, Mahan Mj

For $i=1,2$, let $G_i$ be cocompact groups of isometries of hyperbolic space $\Hyp^n$ of real dimension $n$, $n\ge 3$. Let $H_i\subset G_i$ be infinite index quasiconvex subgro…