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Some new results and inequalities for subsequences of Nörlund logarithmic means of Walsh-Fourier series. (English) Zbl 1506.42036


MSC:

42C10 Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.)
42B25 Maximal functions, Littlewood-Paley theory
60G42 Martingales with discrete parameter
42B30 \(H^p\)-spaces
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