Point spectrum of ergodic Abelian group actions and the corresponding group-measure factors

DOI10.2140/pjm.1985.119.381zbMath0629.46060OpenAlexW2007262789MaRDI QIDQ1093857

Judith A. Packer

Publication date: 1985

Published in: Pacific Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2140/pjm.1985.119.381

zbMATH Keywords

pure point spectrumcocyclemaximal abelian subalgebraCartan subalgebrahyperfinite factorcrossed product of a von Neumann algebra by an action of a discrete abelian groupergodic Abelian group actionsuncountably many Cartan subalgebras of the hyperfinite factor, no two of which are conjugate by inner automorphisms

Mathematics Subject Classification ID

Noncommutative dynamical systems (46L55) Classifications of (C^*)-algebras (46L35)

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