We establish asymptotic equalities for the least upper bounds of deviations of trigonometric polynomials generated by a linear approximation method of a special form on classes of convolutions of analytic functions in the uniform and integral metrics.
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 63, No. 1, pp. 102–109, January, 2011.
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Serdyuk, A.S., Chaichenko, S.O. Approximation of classes of analytic functions by a linear method of special form. Ukr Math J 63, 125–133 (2011). https://doi.org/10.1007/s11253-011-0491-2
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DOI: https://doi.org/10.1007/s11253-011-0491-2