Abstract
Series with respect to a system of characters of a zero-dimensional compact Abelian group are considered. A generalization of an analogue of Dini test and its corollary obtained earlier for systems determined by bounded sequences {pk} are proved.
References
N. Va. Yilenkin. “On a Class of Complete Orthogonal Systems,” Izvestiya Akad. Nauk SSSR., Ser. Matem. 11 (4), 363 (1947).
G. N. Agaev, N. Ya. Vilenkin, G. M. Dzhafarli, and A. I. Rubinshtein, Multiplicative Systems of Functions and Harmonic Analysis on Zero-Dimensional Groups (Elm, Baku, 1981) [in Russian].
G. M. Dzhafarli. “The Convergence of Fourier Series with Respect to a Class of Orthonormal Multiplicative Systems,” Izv. Akad. Nauk AzSSR. Ser. Fiz.-Mat. Tekh. Nauk. 4, 17 (1962).
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Russian Text © The Author(s), 2019, published in Vestnik Moskovskogo Universiteta, Matematika. Mekhanika. 2019, Vol. 74, No. 5, pp. 42–44.
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Voronov, S.M. Some Convergence Tests for Fourier Series with Respect to Vilenkin System in the Case of Unbounded pk. Moscow Univ. Math. Bull. 74, 195–197 (2019). https://doi.org/10.3103/S0027132219050048
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DOI: https://doi.org/10.3103/S0027132219050048