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JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive

Izv. Vyssh. Uchebn. Zaved. Mat., 2021 Number 7, Pages 23–29 (Mi ivm9692)

This article is cited in 3 papers

Kolmogorov widths of the intersection of two finite-dimensional balls

A. A. Vasil'eva

Lomonosov Moscow State University, Moscow Center of Fundamental and Applied Mathematics, GSP-1, 1 Leninskiye Gory, Moscow, 119991 Russia

Abstract: In this paper order estimates for the Kolmogorov widths of the intersection of two finite-dimensional balls of different radii in $p_0$ and $p_1$ norms are obtained. This problem naturally appeared when estimating the widths of intersections of function classes, which are defined by constraints on the derivatives of different orders.

Keywords: Kolmogorov widths, intersections of finite-dimensional balls.

UDC: 517.518

Received: 10.07.2020
Revised: 19.03.2021
Accepted: 30.03.2021

DOI: 10.26907/0021-3446-2021-7-23-29


 English version:
Russian Mathematics (Izvestiya VUZ. Matematika), 2021, 65:7, 17–23


© Steklov Math. Inst. of RAS, 2025