JournalsprimsVol. 20 , No. 1DOI 10.2977/prims/1195181833

A Note on a Theorem of A. Connes on Radon-Nikodym Cocycles

  • Tetsuya Masuda

    Kyoto University, Japan
A Note on a Theorem of A. Connes on Radon-Nikodym Cocycles cover

Abstract

We give an alternative proof of a theorem of A. Connes that every unitary cocycle (relative to a modular automorphism of a weight _φ_0) is a Radon-Nikodym unitary cocycle (:_Dφ_0)t for some faithful normal semifinite weight φ.