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Found 746 Documents (Results 1–100)

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Applying the method of integration of ordinary differential equations based on the Chebyshev series to the restricted plane circular three-body problem. (English. Russian original) Zbl 07432170

Mosc. Univ. Math. Bull. 76, No. 3, 118-122 (2021); translation from Vestn. Mosk. Univ., Ser. I 76, No. 3, 31-36 (2021).
MSC:  65Lxx 65-XX
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Sharp inequalities of Jackson-Stechkin type and widths of classes of functions in \(L_2\). (Russian. English translation) Zbl 1474.42012

Ufim. Mat. Zh. 13, No. 1, 56-68 (2021); translation in Ufa Math. J. 13, No. 1, 56-67 (2021).
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Approximation of the Lebesgue constant of a Lagrange polynomial by a logarithmic function with shifted argument. (English. Russian original) Zbl 1459.42005

J. Math. Sci., New York 252, No. 3, 445-452 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 153, 151-157 (2018).
MSC:  42A15 41A50 41A10
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On the computation of approximate solution to ordinary differential equations by the Chebyshev series method and estimation of its error. (English. Russian original) Zbl 1465.65063

Mosc. Univ. Math. Bull. 75, No. 5, 204-208 (2020); translation from Vestn. Mosk. Univ., Ser. I 75, No. 5, 22-26 (2020).
MSC:  65L60 34A34 65L70
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Explicit solution, for \(n = 6\), to a Markov-type extremal problem initiated by Schur. (English) Zbl 1460.41007

Draganov, Borislav (ed.) et al., Constructive theory of functions. Proceedings of the 13th international conference, Sozopol, Bulgaria, June 2–8, 2019. Dedicated to the memory of Blagovest Sendov. Sofia: Prof. Marin Drinov Academic Publishing House. 195-219 (2020).
MSC:  41A17 41A29
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Further results on the zeros of the derivative of oscillating polynomials with Laguerre weight. (English) Zbl 1460.26016

Draganov, Borislav (ed.) et al., Constructive theory of functions. Proceedings of the 13th international conference, Sozopol, Bulgaria, June 2–8, 2019. Dedicated to the memory of Blagovest Sendov. Sofia: Prof. Marin Drinov Academic Publishing House. 147-155 (2020).
MSC:  26C10 41A50 65H04
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On Chebyshev center of the intersection of two ellipsoids. (English) Zbl 1429.90094

Le Thi, Hoai An (ed.) et al., Optimization of complex systems: theory, models, algorithms and applications. Selected papers of the 6th world congress on global optimization (WCGO 2019), University of Lorraine, Metz, France, July 8–10, 2019. Cham: Springer. Adv. Intell. Syst. Comput. 991, 135-144 (2020).
MSC:  90C47 90C22
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Local perturbation of the discrete Schrödinger operator and a generalized Chebyshev oscillator. (English. Russian original) Zbl 1436.81041

Theor. Math. Phys. 200, No. 3, 1348-1359 (2019); translation from Teor. Mat. Fiz. 200, No. 3, 494-506 (2019).
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On the approximation of functions from the Hölder class given on a segment by their biharmonic Poisson operators. (English. Ukrainian original) Zbl 1434.42004

Ukr. Math. J. 71, No. 7, 1043-1051 (2019); translation from Ukr. Mat. Zh. 71, No. 7, 915-921 (2019).
MSC:  42A10 41A30
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Exact values of the best \((\alpha,\beta)\)-approximations for the classes of convolutions with kernels that do not increase the number of sign changes. (English. Russian original) Zbl 1442.41008

Ukr. Math. J. 69, No. 8, 1248-1261 (2018); translation from Ukr. Mat. Zh. 69, No. 8, 1073-1083 (2017).
MSC:  41A30 41A50
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The generating function of bivariate Chebyshev polynomials associated with the Lie algebra \(G_2\). (English. Russian original) Zbl 1384.41020

Theor. Math. Phys. 192, No. 2, 1115-1128 (2017); translation from Teor. Mat. Fiz. 192, No. 2, 207-220 (2017).
MSC:  41A50 17B10
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Approximate Osher-Solomon schemes for hyperbolic systems. (English) Zbl 1402.35019

Ortegón Gallego, Francisco (ed.) et al., Trends in differential equations and applications. Selected papers based on the presentations at the XXIVth congress on differential equations and applications/XIVth congress on applied mathematics, Cádiz, Spain, June 8–12, 2015. Cham: Springer (ISBN 978-3-319-32012-0/hbk; 978-3-319-32013-7/ebook). SEMA SIMAI Springer Series 8, 1-16 (2016).
MSC:  35A35 35L40 65M12
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