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Found 8 Documents (Results 1–8)

Classes of convolutions with a singular family of kernels: sharp constants for approximation by spaces of shifts. (English. Russian original) Zbl 1462.41005

St. Petersbg. Math. J. 32, No. 2, 233-260 (2021); translation from Algebra Anal. 32, No. 2, 45-84 (2020).
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Sharp Jackson-type inequalities for approximations of classes of convolutions by entire functions of exponential type. (English. Russian original) Zbl 1095.41010

St. Petersbg. Math. J. 17, No. 4, 593-633 (2006); translation from Algebra Anal. 17, No. 4, 59-114 (2005).
MSC:  41A30 41A35 44A35
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