×

Found 9,719 Documents (Results 1–100)

Uniform approximations by Fourier sums on the sets of convolutions of periodic functions of high smoothness. (English. Ukrainian original) Zbl 07757646

Ukr. Math. J. 75, No. 4, 621-651 (2023); translation from Ukr. Mat. Zh. 75, No. 4, 542-567 (2023).
PDF BibTeX XML Cite
Full Text: DOI arXiv

On estimates of uniform approximations by rational Fourier-Chebyshev integral operators for a certain choice of poles. (English. Russian original) Zbl 1518.42004

Math. Notes 113, No. 6, 815-830 (2023); translation from Mat. Zametki 113, No. 6, 876-894 (2023).
MSC:  42A10 41A20 41A50
PDF BibTeX XML Cite
Full Text: DOI

The De La Vallée Poussin sums of Fourier-Chebyshev rational integral operators and approximations to Poisson integrals on the segment [-1,1]. (The De La Vallée Poussin sums of Fourier-Chebyshev rational integral operators and approximations to Poisson integrals on the segment.) (English. Russian original) Zbl 07658747

Sib. Math. J. 64, No. 1, 137-156 (2023); translation from Sib. Mat. Zh. 64, No. 1, 162-183 (2023).
MSC:  42A10 42A24 41A35
PDF BibTeX XML Cite
Full Text: DOI

On estimates of diameter values of classes of functions in the weight space \(L_{2, \gamma } ( \mathbb{R}^2)\), \(\gamma = \exp(-x^2 - y^2)\). (English. Ukrainian original) Zbl 07653249

J. Math. Sci., New York 264, No. 4, 471-488 (2022); translation from Ukr. Mat. Visn. 19, No. 2, 275-298 (2022).
MSC:  41Axx 42Axx 26-XX
PDF BibTeX XML Cite
Full Text: DOI

Exact inequalities between the best polynomial approximations and averaged norms of finite differences in the \(B_2\) space and widths of some classes of functions. (English. Russian original) Zbl 07640125

Russ. Math. 66, No. 3, 50-58 (2022); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2022, No. 3, 61-70 (2022).
MSC:  41Axx 41-XX 42Axx
PDF BibTeX XML Cite
Full Text: DOI

Conjugate rational Fourier-Chebyshev operator and its approximation properties. (English. Russian original) Zbl 1505.42002

Russ. Math. 66, No. 3, 35-49 (2022); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2022, No. 3, 44-60 (2022).
PDF BibTeX XML Cite
Full Text: DOI

Filter Results by …

Document Type

Database

Reviewing State

all top 5

Author

all top 5

Serial

all top 5

Year of Publication

all top 3

Main Field