
arXiv: 1104.3060
We obtain asymptotic equalities for least upper bounds of deviations in the uniform metric of de la Vall��e Poussin sums on the sets C^{q}_��H_��of Poisson integrals of functions from the class H_��generated by convex upwards moduli of continuity ��(t) which satisfy the condition ��(t)/t\to\infty as t\to 0. As an implication, a solution of the Kolmogorov-Nikol'skii problem for de la Vall��e Poussin sums on the sets of Poisson integrals of functions belonging to Lipschitz classes H^��, 0
Kolmogorv-Nikol'skii problem, asymptotice equalities, Mathematics - Classical Analysis and ODEs, de la Vallée Poussin sums, Classical Analysis and ODEs (math.CA), FOS: Mathematics, 42A10, Approximation by other special function classes
Kolmogorv-Nikol'skii problem, asymptotice equalities, Mathematics - Classical Analysis and ODEs, de la Vallée Poussin sums, Classical Analysis and ODEs (math.CA), FOS: Mathematics, 42A10, Approximation by other special function classes
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