A note on the surjunctivity of algebraic dynamical systems
  Let $X$ be a compact metrizable group and $\Gamma$ a countable group acting on $X$ by continuous group automorphisms. We give sufficient conditions under which the dynamical system $(X,\Gamma)$ is surjunctive, i.e., every injective continuous map $\tau \colon X \to X$ commuting with the action of $\Gamma$ is surjective. 
Tullio Ceccherini-Silberstein and Michel Coornaert
math.DS math.GR