Abstract
Estimates of the norms and the best approximations of the generalized Liouville–Weyl derivative in the two-dimensional case are obtained.
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Russian Text © The Author(s), 2020, published in Matematicheskie Zametki, 2020, Vol. 107, No. 5, pp. 674–692.
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Jumabayeva, A.A., Simonov, B.V. Transformation of Fourier Series by Means of General Monotone Sequences. Math Notes 107, 740–758 (2020). https://doi.org/10.1134/S0001434620050041
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DOI: https://doi.org/10.1134/S0001434620050041