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

Izv. Vyssh. Uchebn. Zaved. Mat., 2019 Number 9, Pages 73–95 (Mi ivm9500)

A comparision of the V- and S-Dini tests. A counterexamples on the symmetrical Dini tests by a type Haar and Walsh systems

V. I. Shcherbakov

Moscow Technical University of Communication and Information Science, 32 Narodnogo Opolcheniya str., Moscow, 123995 Russia

Abstract: We show that a both conditions are important for symmetrical Dini's test by Price's and generalized Haar's systems; an execution of one of them's cannot guarantee a convergence of Fourier series for any majorants. An accordingly examples are constructived.

Keywords: abelian group, Vilenkin's group, characters system, Price's systems, generalized Haar's systems, Dirichlet's kernels, Dini's test.

UDC: 517.52

Received: 18.08.2018
Revised: 25.01.2019
Accepted: 27.03.2019

DOI: 10.26907/0021-3446-2019-9-73-95


 English version:
Russian Mathematics (Izvestiya VUZ. Matematika), 2019, 63:9, 63–83

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© Steklov Math. Inst. of RAS, 2024