Non-amenable C${}^{\ast }$-superrigid groups that are not W${}^{\ast }$-superrigid

Juan Felipe Ariza Mejía, Ionuţ Chifan, Adriana Fernández Quero

Using techniques at the intersection of deformation/rigidity theory, geometric group theory, and the theory of $C^{\ast }$-algebras, we construct a continuum of nonamenable groups $G$ th…