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This article is cited in 4 scientific papers (total in 4 papers)
Equiconvergence and equisummability of nonharmonic Fourier expansions with ordinary trigonometric series
A. M. Sedletskii Moscow Power Engineering Institute
Abstract:
Given $f\in L(-\pi,\pi)$, we consider its nonharmonic Fourier series $f(x)\sim\sum c_ne^{i\lambda}n^x$, where $\lambda_n$ are the roots of the entire function $L(z)=\int_{-\pi}^\pi e^{izt}\,d\sigma(T)$. We show that this series is equiconvergent, uniformly inside $(-\pi,\pi)$, and equisummable with the Fourier series of $f$ with respect to the trigonometric system if $\sigma'(t)=k(t)(\pi-|t|)^{-\alpha}$, $\alpha\in(0,1)$, $\operatorname{var}k<\infty$, $k(\pi-0)\ne0$, $k(-\pi+0)\ne0$.
Received: 29.05.1974
Citation:
A. M. Sedletskii, “Equiconvergence and equisummability of nonharmonic Fourier expansions with ordinary trigonometric series”, Mat. Zametki, 18:1 (1975), 9–17; Math. Notes, 18:1 (1975), 586–591
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https://www.mathnet.ru/eng/mzm7619 https://www.mathnet.ru/eng/mzm/v18/i1/p9
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Abstract page: | 253 | Full-text PDF : | 83 | First page: | 1 |
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