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The Lebesgue Constants of Fourier Partial Sums

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Abstract

We give a brief overview of the results on the behavior of the Lebesgue constants for various partial sums of multiple Fourier series. In addition, we establish a new property of the Lebesgue constants concerning its partly increasing behavior.

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Acknowledgements

The authors acknowledge the support of the Gelbart Institute at the Mathematics Department in Bar-Ilan University.

The authors are indebted to the referee for thorough reading and valuable remarks and suggestions.

Last but not least, the authors thank A. Podkorytov for bringing their attention to Szegö’s result and for interesting discussions.

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Correspondence to Elijah Liflyand .

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Ganzburg, M.I., Liflyand, E. (2019). The Lebesgue Constants of Fourier Partial Sums. In: Abell, M., Iacob, E., Stokolos, A., Taylor, S., Tikhonov, S., Zhu, J. (eds) Topics in Classical and Modern Analysis. Applied and Numerical Harmonic Analysis. Birkhäuser, Cham. https://doi.org/10.1007/978-3-030-12277-5_10

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