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Found 38 Documents (Results 1–38)

Sharp orders of best rational approximation of the convolution of a Weyl kernel and a function in \(L_ p\). (English. Russian original) Zbl 0759.41011

Sov. Math., Dokl. 42, No. 3, 789-792 (1991); translation from Dokl. Akad. Nauk SSSR 315, No. 2, 313-316 (1990).
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Asymptotic behavior of best approximations of individual functions in the classes \(W^ rH_{\omega}\) in the \(L_ p\)-metric. (English. Russian original) Zbl 0704.41017

Sov. Math., Dokl. 39, No. 3, 541-544 (1989); translation from Dokl. Akad. Nauk SSSR 306, No. 4, 777-781 (1989).
Reviewer: D.Khavinson
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On the approximation of differentiable functions by Lagrange interpolation polynomials with respect to the Tchebycheff nodes. (English. Russian original) Zbl 0537.41002

Sov. Math. Dokl. 24, 529-532 (1981); translation from Dokl. Akad. Nauk SSSR 261, 527-530 (1981).
Reviewer: R.B.Saxena
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Approximation of continuous and differentiable functions of several variables by generalized polynomials (finite linear combinations of functions of fewer variables). (English. Russian original) Zbl 0215.46501

Sov. Math., Dokl. 11, 648-652 (1970); translation from Dokl. Akad. Nauk SSSR 192, 483-486 (1970).
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