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Functional analysis and its applications
March 23, 2017 10:30–11:50
 


One-sided convergence in noncommutative individual ergodic theorems

V. I. Chilina, S. N. Litvinovb

a National University of Uzbekistan named after M. Ulugbek, Tashkent
b Pennsylvania State University, Department of Mathematics

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Abstract: It is known that, for a positive Dunford-Schwartz operator in a noncommutative $L^p$-space, or, more generally, in a noncommutative Orlicz space, the corresponding ergodic averages converge bilaterally almost uniformly. We show that these averages converge almost uniformly in each noncommutative symmetric space $E$ such that $\mu_t(x) \to 0$ as $t \to 0$ for every $x \in E$, where $\mu_t(x)$ is a non-increasing rearrangement of $x$.

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