Noncommutative Poisson Boundaries, Ultraproducts, and Entropy
被引:2
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作者:
Zhou, Shuoxing
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机构:
Ecole Normale Super, Dept Math & Applicat, F-75005 Paris, France
Univ Paris Saclay, Lab Math Orsay, F-91405 Orsay, FranceEcole Normale Super, Dept Math & Applicat, F-75005 Paris, France
Zhou, Shuoxing
[1
,2
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机构:
[1] Ecole Normale Super, Dept Math & Applicat, F-75005 Paris, France
[2] Univ Paris Saclay, Lab Math Orsay, F-91405 Orsay, France
We construct the noncommutative Poisson boundaries of tracial von Neumann algebras through the ultraproducts of von Neumann algebras. As an application of this result, we complete the proof of Kaimanovich-Vershik's fundamental theorems regarding noncommutative entropy. We also prove the Amenability-Trivial Boundary equivalence and Choquet-Deny-Type I equivalence for tracial von Neumann algebras.
机构:
Dubna State Univ, Univ Skaya Str 19, Dubna 141980, Moscow Region, Russia
Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Moscow Region, RussiaDubna State Univ, Univ Skaya Str 19, Dubna 141980, Moscow Region, Russia
Fursaev, Dmitry V.
Solodukhin, Sergey N.
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机构:
Univ Tours, Federat Denis Poisson, Lab Math & Phys Theor CNRS UMR 7350, Parc Grandmont, F-37200 Tours, FranceDubna State Univ, Univ Skaya Str 19, Dubna 141980, Moscow Region, Russia