Approximate groups III: the unitary case

By adapting the classical proof of Jordan's theorem on finite subgroups of linear groups, we show that every approximate subgroup of the unitary group Un(C) is almost abelian.

Approximate groups III: the unitary case

By adapting the classical proof of Jordan's theorem on finite subgroups of linear groups, we show that every approximate subgroup of the unitary group Un(C) is almost abelian.