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

Izv. Vyssh. Uchebn. Zaved. Mat., 2023 Number 3, Pages 41–51 (Mi ivm9860)

This article is cited in 1 paper

Construction of a factorization of a certain class of matrix functions in the Wiener algebra of order two

A. F. Voroninab

a Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, 4 Ac. Koptyug Ave., Novosibirsk, 630090 Russia
b Novosibirsk State Technical University, 20 K. Marx Ave., Novosibirsk, 630073, Russia

Abstract: In this paper a representative class of matrix functions from the Wiener algebra of order 2 is found, which admits effective factorization. The factorization problem for elements of this class reduces to a truncated Wiener–Hopf equation with a contracting integral operator. The latter guarantees, as will be shown in the paper, the existence of canonical factorization and its construction for matrix functions from the class under consideration.

Keywords: factorization problem,partial indices, Wiener algebra, Riemann boundary value problem, truncated equation Wiener–Hopf.

UDC: 517.544

Received: 19.06.2022
Revised: 10.11.2022
Accepted: 21.12.2022

DOI: 10.26907/0021-3446-2023-3-41-51



© Steklov Math. Inst. of RAS, 2025