Abstract
Asymptotically precise estimates are obtained for the deviation, in the L1-norm, of interpolation polynomials with equally-spaced nodes from certain classes of functions.
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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 42, No. 6, pp. 781–786, June, 1990.
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Motornyi, V.P. Approximation of periodic functions by interpolation polynomials in L1 . Ukr Math J 42, 690–693 (1990). https://doi.org/10.1007/BF01058914
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DOI: https://doi.org/10.1007/BF01058914