The problem of convergence of the Cesàro means of negative order for double Walsh–Fourier series of functions of bounded generalized variation is investigated.
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Published in Ukrains’kyi Matematychnyi Zhurnal, Vol. 64, No. 4, pp. 490–507, April, 2012.
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Goginava, U. On the summability of double Walsh–fourier series of functions of bounded generalized variation. Ukr Math J 64, 555–574 (2012). https://doi.org/10.1007/s11253-012-0664-7
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DOI: https://doi.org/10.1007/s11253-012-0664-7