Ergodic properties of group extensions of dynamical systems with discrete spectra
Mieczysław Mentzen (1991)
Studia Mathematica
Similarity:
Ergodic group extensions of a dynamical system with discrete spectrum are considered. The elements of the centralizer of such a system are described. The main result says that each invariant sub-σ-algebra is determined by a compact subgroup in the centralizer of a normal natural factor.