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Lacunary fourier series

Author: Giorgi Gognadze
Keywords: Modulus of continuity, Hadamard lacunarity, lacunary series, Fejer kernel.

The article concerns with double lacunary Fourier series. In this article generalization of J.R. Patadia results for functions of two variables are given. In particular, behaviour of Fourier coefficients and absolute convergence problems are investigated in the case of local restrictions on functions.

Lecture files:

ფურიეს ლაკუნარული მწკრივები [ka]

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