Brief Communications

Counterexamples to the Hardy–Littlewood Theorem for Generalized Monotone Sequences

M. I. Dyachenko^ab, K. A. Oganesyan<sup>ab

a</sup> Lomonosov Moscow State University
^b Moscow Center for Fundamental and Applied Mathematics

Keywords: Fourier series, Hardy–Littlewood theorem, generalized monotone sequences.

UDC: 517.521

Received: 12.10.2022

DOI: 10.4213/mzm13786

 English version: Mathematical Notes, 2023, 113:3, 458–463

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