English

The Radon-Nikodym problem for approximately proper equivalence relations

Operator Algebras 2007-05-23 v1 Dynamical Systems

Abstract

We study the Radon-Nikodym problem for approximately proper equivalence relations and more specifically the uniqueness of certain Gibbs states. One of our tools is a variant of the dimension group introduced in the study of AF algebras. As applications, we retrieve sufficient conditions for the uniqueness of traces on AF algebras and parts of the Perron-Frobenius-Ruelle theorem.

Cite

@article{arxiv.math/0211369,
  title  = {The Radon-Nikodym problem for approximately proper equivalence relations},
  author = {Jean Renault},
  journal= {arXiv preprint arXiv:math/0211369},
  year   = {2007}
}

Comments

37 pages