On the Upper Bound for the Expectation of the Norm of a Vector Uniformly Distributed on the Sphere and the Phenomenon of Concentration of Uniform Measure on the Sphere


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Abstract

We consider the problem of constructing upper bounds for the expectation of the norm of a vector uniformly distributed on the Euclidean unit sphere.

About the authors

É. A. Gorbunov

Moscow Institute of Physics and Technology (National Research University)

Author for correspondence.
Email: ed-gorbunov@yandex.ru
Russian Federation, Dolgoprudnyi, Moscow Oblast, 141701

E. A. Vorontsova

Far Eastern Federal University; Université Grenoble Alpes

Author for correspondence.
Email: vorontsovaea@gmail.com
Russian Federation, Vladivostok, 690950; Grenoble, 38400

A. V. Gasnikov

Moscow Institute of Physics and Technology (National Research University); Caucasus Mathematical Center

Author for correspondence.
Email: gasnikov@yandex.ru
Russian Federation, Dolgoprudnyi, Moscow Oblast, 141701; Maikop, 385000

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