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On the Approximative Properties of Fourier Series in Laguerre–Sobolev Polynomials

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Abstract

Considering the approximation of a function \( f \) from a Sobolev space by the partial sums of Fourier series in a system of Sobolev orthogonal polynomials generated by classical Laguerre polynomials, we obtain an estimate for the convergence rate of the partial sums to \( f \).

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This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.

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Correspondence to R. M. Gadzhimirzaev.

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Translated from Sibirskii Matematicheskii Zhurnal, 2024, Vol. 65, No. 1, pp. 38–51. https://doi.org/10.33048/smzh.2024.65.104

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Gadzhimirzaev, R.M. On the Approximative Properties of Fourier Series in Laguerre–Sobolev Polynomials. Sib Math J 65, 30–43 (2024). https://doi.org/10.1134/S003744662401004X

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  • DOI: https://doi.org/10.1134/S003744662401004X

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