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math.CA2023
On the divergence of Féjer means with respect to Vilenkin systems on the set of measure zero
N. Areshidze, L. -E. Persson, G. Tephnadze
The famous Carleson-Hunt theorem has been in focus of interest for a long time. This theorem concerns convergence almost everywhere of Fourier series of functions for $1…
math.CA2023
Approximation by Nörlund means with respect to Walsh system in Lebesgue spaces
N. Areshidze, G. Tephnadze
In this paper we improve and complement a result by Móricz and Siddiqi \cite{Mor}. In particular, we prove that their inequality of the Nörlund means with respect to the Walsh syst…
math.CA2015★ 1 cited
On the Nörlund means of Vilenkin-Fourier series
I. Blahota, L. E. Persson, G. Tephnadze
In this paper we prove and discuss some new -type inequalities of weighted maximal operators of Vilenkin-Nörlund means with non-increasing coefficients.…