The Problem of Approximation in Mean on Arcs in the Complex Plane
Matematičeskie zametki, Tome 99 (2016) no. 5, pp. 698-714

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Classical theorems on the approximation of curves in the complex domain are studied; in particular, direct and inverse theorems on the arcs $\Gamma$ in the complex plane in the metric of $L_p(\Gamma)$ are obtained. The results obtained are new in the case of a closed interval $[-1,1]$ as well.
Keywords: approximation of curves in the complex domain, Jackson–Bernstein theorem, Lipschitz condition, Newman problem, Jordan curve, Jackson–Dzyadyk polynomial, Minkowski inequality.
J. I. Mamedkhanov. The Problem of Approximation in Mean on Arcs in the Complex Plane. Matematičeskie zametki, Tome 99 (2016) no. 5, pp. 698-714. http://geodesic.mathdoc.fr/item/MZM_2016_99_5_a5/
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