On Exact Estimates for the Pointwise Approximation of the Classes W^rH^ω by Algebraic Polynomials
Abstract
We obtain estimates for the approximation of functions of the class W r H ω, where ω(t) is a convex modulus of continuity such that tω′(t) does not decrease, by algebraic polynomials with regard for the position of a point on the segment [−1, 1]. The estimates obtained cannot be improved for all moduli of continuity simultaneously.Downloads
Published
25.06.2001
Issue
Section
Research articles
How to Cite
Motornyi, V. P. “On Exact Estimates for the Pointwise Approximation of the Classes W^rH^ω by Algebraic Polynomials”. Ukrains’kyi Matematychnyi Zhurnal, vol. 53, no. 6, June 2001, pp. 783-99, https://umj.imath.kiev.ua/index.php/umj/article/view/4299.