Dynamical propagation and Roe algebras of warped spaces

Tim de Laat, Federico Vigolo, Jeroen Winkel

Given a non-singular action $\Gamma \curvearrowright (X,\mu )$, we define the $\ast$-algebra ${\mathbb{C}}_{\mathrm{fp}}[\Gamma \curvearrowright X]$ of operators of finite dynamical propagation associated w…