Unitarizability, Maurey--Nikishin factorization, and Polish groups of finite type

Hiroshi Ando, Yasumichi Matsuzawa, Andreas Thom +1

Let $\Gamma$ be a countable discrete group, and let $\pi :\Gamma \to \mathrm{GL}(H)$ be a representation of $\Gamma$ by invertible operators on a separable Hilbert space $H$. We show that the sem…