2017
Том 69
№ 9

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Lower bounds for the deviations of the best linear methods of approximation of continuous functions by trigonometric polynomials

Pichugov S. A.

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Abstract

In the case of uniform approximation of continuous periodic functions of one variable by trigonometric polynomials, we obtain lower bounds for the Jackson constants of the best linear methods of approximation.

English version (Springer): Ukrainian Mathematical Journal 64 (2012), no. 5, pp 752-766.

Citation Example: Pichugov S. A. Lower bounds for the deviations of the best linear methods of approximation of continuous functions by trigonometric polynomials // Ukr. Mat. Zh. - 2012. - 64, № 5. - pp. 662-673.

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