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This article is cited in 16 scientific papers (total in 16 papers)
Surveys
Geometry of Banach limits and their applications
E. M. Semenova, F. A. Sukochevb, A. S. Usachevac a Voronezh State University
b School of Mathematics and Statistics, University of New South Wales, Sydney, Australia
c Central South University, Changsha, China
Abstract:
A Banach limit is a positive shift-invariant functional on $\ell_\infty$ which extends the functional
$$
(x_1,x_2,\dots)\mapsto\lim_{n\to\infty}x_n
$$
from the set of convergent sequences to $\ell_\infty$. The history of Banach limits has its origins in classical papers by Banach and Mazur. The set of Banach limits has interesting properties which are useful in applications. This survey describes the current state of the theory of Banach limits and of the areas in analysis where they have found applications.
Bibliography: 137 titles.
Keywords:
Banach limits, invariant Banach limits, almost convergent sequences, extreme points, Cesàro operator, dilation operator, Stone–Čech compactification, singular trace of an operator, non-commutative geometry.
Received: 03.07.2019
Citation:
E. M. Semenov, F. A. Sukochev, A. S. Usachev, “Geometry of Banach limits and their applications”, Russian Math. Surveys, 75:4 (2020), 725–763
Linking options:
https://www.mathnet.ru/eng/rm9901https://doi.org/10.1070/RM9901 https://www.mathnet.ru/eng/rm/v75/i4/p153
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