Literature cited
V. K. Dzyadyk, Introduction to the Theory of Uniform Approximation of Functions by Polynomials [in Russian], Nauka, Moscow (1977).
R. A. DeVore and X. M. Yu, “Pointwise estimates for monotone polynomial approximation,” Constr. Approx.,1, No. 4, 323–331 (1985).
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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 41, No. 4, pp. 524–530, April, 1989.
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Shevchuk, I.A. Properties of the Dzyadyk polynomial kernels on a segment. Ukr Math J 41, 457–461 (1989). https://doi.org/10.1007/BF01060625
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DOI: https://doi.org/10.1007/BF01060625