## Found 13 Documents (Results 1–13)

### Optimal recovery methods exact on trigonometric polynomials for the solution of the heat equation.(English. Russian original)Zbl 07664488

Math. Notes 113, No. 1, 116-128 (2023); translation from Mat. Zametki 113, No. 1, 118-131 (2023).
MSC:  35Jxx 41Axx 35Rxx
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### Kolmogorov widths of intersections of finite-dimensional balls.(English)Zbl 07543653

MSC:  41A46 46B20
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### Bounds for the Kolmogorov widths of the Sobolev weighted classes with conditions on the zero and highest derivatives.(English)Zbl 1500.46029

MSC:  46E35 41A46 47B06
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### Kolmogorov widths of the intersection of two finite-dimensional balls.(English. Russian original)Zbl 1479.41018

Russ. Math. 65, No. 7, 17-23 (2021); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2021, No. 7, 23-29 (2021).
MSC:  41A45 46B45
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### Sharp inequalities between the best root-mean-square approximations of analytic functions in the disk and some smoothness characteristics in the Bergman space.(English. Russian original)Zbl 1477.41006

Math. Notes 110, No. 2, 248-260 (2021); translation from Mat. Zametki 110, No. 2, 266-281 (2021).
MSC:  41A17 30E10 41A25
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### Sufficient conditions for convergence of generalized sinc-approximations on segment.(English. Russian original)Zbl 1466.41003

J. Math. Sci., New York 255, No. 4, 513-533 (2021); translation from Probl. Mat. Anal. 108, 149-166 (2021).
MSC:  41A05
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### Kolmogorov widths of intersections of weighted Sobolev classes on an interval with conditions on the zeroth and first derivatives.(English. Russian original)Zbl 1460.41014

Izv. Math. 85, No. 1, 1-23 (2021); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 85, No. 1, 3-26 (2021).
MSC:  41A46
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### On the uniform approximation of functions of bounded variation by Lagrange interpolation polynomials with a matrix $${\mathcal L}_n^{(\alpha_n,\beta_n)}$$ of Jacobi nodes.(English. Russian original)Zbl 1466.41002

Izv. Math. 84, No. 6, 1224-1249 (2020); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 84, No. 6, 197-222 (2020).
MSC:  41A05
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### Convergence of the Lagrange-Sturm-Liouville processes for continuous functions of bounded variation.(Russian. English summary)Zbl 1463.41008

MSC:  41A05 41A58 94A12
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### Korovkin-type approximation theory in Riesz spaces.(English)Zbl 1491.46005

MSC:  46A40 06F25 41A35
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### Approximation problems in the Lebesgue spaces with variable exponent.(English)Zbl 1395.46023

MSC:  46E30 41A10
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### On the problem of linear widths of the classes $$B_{p,\theta}^r$$ of periodic functions of many variables.(English. Ukrainian original)Zbl 1309.41014

Ukr. Math. J. 66, No. 7, 1085-1098 (2014); translation from Ukr. Mat. Zh. 66, No. 7, 970-982 (2014).
MSC:  41A46 42A10
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