Functions with general monotone Fourier coefficients

AS Belov, MI Dyachenko… - Russian Mathematical …, 2021 - iopscience.iop.org
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Hardy–Littlewood theorems for trigonometric series with general monotone coefficients

M Dyachenko, A Mukanov, S Tikhonov - Studia Mathematica, 2019 - recercat.cat
We study trigonometric series with general monotone coefficients, ie, satisfying∑ k=
n2n∣∣ ak− ak+ 1∣∣≤ C∑ k= n/λλn∣∣ ak∣∣ k, n∈ ℕ, for some C> 0 and λ> 1. For …

The Boas problem on Hankel transforms

A Debernardi - Journal of Fourier Analysis and Applications, 2019 - Springer
Norm equivalences between a function and its Hankel transform are studied both in the
context of weighted Lebesgue spaces with power weights, and in Lorentz spaces. Boas-type …

Smoothness and asymptotic properties of functions with general monotone Fourier coefficients

MI Dyachenko, SY Tikhonov - Journal of Fourier Analysis and Applications, 2018 - Springer
In this paper we study trigonometric series with general monotone coefficients, ie, satisfying
∑\limits _ k= n^ 2n| a_k-a_ k+ 1| ≤ C ∑\limits _ k= n/γ^ γ n| a_k| k,\quad n ∈ N,∑ k= n 2 n …

Uniform convergence and integrability of Fourier integrals

M Dyachenko, E Liflyand, S Tikhonov - Journal of mathematical analysis …, 2010 - Elsevier
Firstly, we study the uniform convergence of cosine and sine Fourier transforms. Secondly,
we obtain Pitt–Boas type results on Lp-integrability of Fourier transforms with the power …

Uniform convergence of trigonometric series with general monotone coefficients

M Dyachenko, A Mukanov, S Tikhonov - Canadian Journal of …, 2019 - cambridge.org
Uniform Convergence of Trigonometric Series with General Monotone Coefficients Page 1
http://dx.doi.org/. /CJM--©Canadian Mathematical Society Uniform Convergence of …

[HTML][HTML] On summability of Fourier coefficients of functions from Lebesgue space

M Dyachenko, E Nursultanov, A Kankenova - Journal of Mathematical …, 2014 - Elsevier
On summability of Fourier coefficients of functions from Lebesgue space - ScienceDirect Skip to
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[HTML][HTML] Hardy–Littlewood and Pitt's inequalities for Hausdorff operators

M Dyachenko, E Nursultanov, S Tikhonov - Bulletin des Sciences …, 2018 - Elsevier
In this paper we study transformed trigonometric series with Hausdorff averages of Fourier
coefficients. We prove Hardy–Littlewood and Pitt's inequalities for such series. The …

Transformation of Fourier Series by Means of General Monotone Sequences.

AA Jumabayeva, BV Simonov - Mathematical Notes, 2020 - search.ebscohost.com
Transformation of Fourier Series by Means of General Monotone Sequences Page 1 ISSN
0001-4346, Mathematical Notes, 2020, Vol. 107, No. 5, pp. 740–758. © Pleiades Publishing …

[HTML][HTML] Hardy–Littlewood-type theorems for Fourier transforms in Rd

M Dyachenko, E Nursultanov, S Tikhonov… - Journal of Functional …, 2023 - Elsevier
We obtain Fourier inequalities in the weighted L p spaces for any 1< p<∞ involving the
Hardy–Cesàro and Hardy–Bellman operators. We extend these results to product Hardy …