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This article is cited in 2 scientific papers (total in 2 papers)
Exponential approximation of functions in Lebesgue spaces with Muckenhoupt weight
R. Akgün Balikesir University,
Faculty of Arts and Sciences, Department of Mathematics,
Cagis Yerleskesi, Altieylul, 10145, Balikesir, Türkiye
Abstract:
Using a transference result, several inequalities of approximation by entire functions of exponential type in $\mathcal{C}(\mathbf{R})$, the class of bounded uniformly continuous functions defined on $\mathbf{R}:=\left(-\infty, +\infty \right)$, are extended to the Lebesgue spaces $L^{p}\left( \mathbf{\varrho }dx\right) $ $1\leq p<\infty $ with Muckenhoupt weight $\mathbf{\varrho }$. This gives us a different proof of Jackson type direct theorems and Bernstein-Timan type inverse estimates in $L^{p}\left( \mathbf{\varrho }dx\right) $. Results also cover the case $p=1$.
Keywords:
Lebesgue spaces, Muckenhoupt weight, entire functions of exponential type, one-sided Steklov operator, best approximation, direct theorem, inverse theorem, modulus of smoothness, Marchaud-type inequality, K-functional.
Received: 29.08.2022 Revised: 09.12.2022 Accepted: 16.12.2022
Citation:
R. Akgün, “Exponential approximation of functions in Lebesgue spaces with Muckenhoupt weight”, Probl. Anal. Issues Anal., 12(30):1 (2023), 3–24
Linking options:
https://www.mathnet.ru/eng/pa365 https://www.mathnet.ru/eng/pa/v30/i1/p3
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Abstract page: | 63 | Full-text PDF : | 53 | References: | 17 |
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