The Spectrum of Completely Positive Entr
โ
A.H. Dooley; V.Ya. Golodets
๐
Article
๐
2002
๐
Elsevier Science
๐
English
โ 189 KB
We prove that an ergodic free action of a countable discrete amenable group with completely positive entropy has a countable Lebesgue spectrum. Our approach is based on the Rudolph-Weiss result on the equality of conditional entropies for actions of countable amenable groups with the same orbits. Re