On individual ergodic theorems for semifinite von Neumann algebras

Vladimir Chilin, Semyon Litvinov

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2 Scopus citations


It is known that, for a positive Dunford-Schwartz operator in a noncommutative Lp-space, 1≤p<∞, or, more generally, in a noncommutative Orlicz space with order continuous norm, the corresponding ergodic averages converge bilaterally almost uniformly. We show that these averages converge blaterally almost uniformly in each noncommutative symmetric space E such that μt(x)→0 as t→∞ for every x∈E, where μt(x) is the non-increasing rearrangement of x. Noncommutative Dunford-Schwartz-type multiparameter ergodic theorems are studied. A wide range of noncommutative symmetric spaces for which Dunford-Schwartz-type individual ergodic theorems hold is outlined.

Original languageEnglish (US)
Article number124710
JournalJournal of Mathematical Analysis and Applications
Issue number1
StatePublished - Mar 1 2021

All Science Journal Classification (ASJC) codes

  • Analysis
  • Applied Mathematics


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