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On the uniqueness and integrability of multiple trigonometric series

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Abstract

Under minimal constraints on the coefficients, we prove uniqueness theorems for multiple trigonometric series in which, instead of pointwise convergence, we consider the convergence of integral means of spherical, cubic, and other partial sums. We also obtain sufficient conditions for the integrability of multiple trigonometric series, i.e., conditions under which these series are Fourier series.

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Correspondence to A. A. Talalyan.

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Original Russian Text © A. A. Talalyan, 2009, published in Matematicheskie Zametki, 2009, Vol. 86, No. 5, pp. 761–775.

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Talalyan, A.A. On the uniqueness and integrability of multiple trigonometric series. Math Notes 86, 716–728 (2009). https://doi.org/10.1134/S0001434609110145

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