## Found 746 Documents (Results 1–100)

100
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### Hedgehogs in Lehmer’s problem. (English)Zbl 07505696

MSC:  11R06 30E10 33C45
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### Near-optimal polynomial interpolation on spherical triangles. (English)Zbl 07488624

MSC:  41A10 65D05
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### A generalisation of de la Vallée-Poussin procedure to multivariate approximations. (English)Zbl 1482.41022

MSC:  41A63 41A10
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### A new approach for constructing mock-Chebyshev grids. (English)Zbl 07441988

MSC:  65D05 41A05 41A10
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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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### A novel Chebyshev-collocation spectral method for solving the transport equation. (English)Zbl 1476.65021

MSC:  65D15 65L99 34A45
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### Filtered interpolation for solving Prandtl’s integro-differential equations. (English)Zbl 07401538

MSC:  65R20 47G20
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### Extension of the best polynomial approximation operator in Musielak-Orlicz spaces. (English)Zbl 07393055

MSC:  41A10 41A50 41A52
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MSC:  65D05
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### Convergence rates on spectral orthogonal projection approximation for functions of algebraic and logarithmatic regularities. (English)Zbl 1465.41003

MSC:  41A10 41A25 41A50
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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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### On a second type Neumann series of modified Bessel functions of the first kind. (English)Zbl 1469.33005

MSC:  33C10 40A25 40C10
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### How much faster does the best polynomial approximation converge than Legendre projection? (English)Zbl 1475.41007

MSC:  41A25 41A10
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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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### A discrete weighted Markov-Bernstein inequality for sequences and polynomials. (English)Zbl 1455.41003

MSC:  41A17 33C45
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### On the numerical solution of optimal control problems via Bell polynomials basis. (English)Zbl 1485.49004

MSC:  49J15 65M70 41A50
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### Approximation by interpolation: the Chebyshev nodes. (English)Zbl 07487170

MSC:  32E30 97N50
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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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MSC:  41A05

### A fast and efficient scheme for solving a class of nonlinear Lienard’s equations. (English)Zbl 1452.65135

MSC:  65L60 34A45 34B30
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### Finite alternation theorems and a constructive approach to piecewise polynomial approximation in Chebyshev norm. (English)Zbl 1444.41004

MSC:  41A10 41A15 41A50
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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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### Best polynomial approximation in $$L_w^2 ( S )$$ for the simplex $$S$$. (English)Zbl 1434.41026

MSC:  41A50 41A10
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### Improved error bound for multivariate Chebyshev polynomial interpolation. (English)Zbl 07474739

MSC:  41A10 26C05
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### Some problems of approximation of periodic functions by trigonometric polynomials in $$L_2$$. (Russian. English summary)Zbl 1457.42002

MSC:  42A10 41A10 41A50
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### On approximation by a kind of modified Grunwald interpolation operators in weighted Orlicz spaces. (English)Zbl 1463.41041

MSC:  41A35 41A65
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### Explicit algebraic solution of Zolotarev’s first problem for low-degree polynomials. (English)Zbl 1463.41016

MSC:  41A10 41A29 41A50

### On Berman’s phenomenon for $$(0,1,2)$$ Hermite-Fejér interpolation. (English)Zbl 1463.41001

MSC:  41A05 41A10

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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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### Chebyshev polynomials and the proper decomposition of functions. (English. Russian original)Zbl 07155030

Theor. Math. Phys. 200, No. 2, 1147-1157 (2019); translation from Teor. Mat. Fiz. 200, No. 2, 259-268 (2019).
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### Rational approximation of the head equation in unbounded domain. ([Rational approximation of the heat equation in unbounded domain].) (English)Zbl 1438.65281

MSC:  65N30 35A35 35K20
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### Fejér sums and Chebyshev polynomials. (English)Zbl 1428.41035

MSC:  41A50 42A10
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### Hermite polynomial interpolation based on the third Chebyshev nodes. (Chinese. English summary)Zbl 1438.41007

MSC:  41A05 41A10
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### A Chebyshev theorem for ellipses in the complex plane. (English)Zbl 1477.41014

MSC:  41A50 30C10
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### Inequalities for the extended best polynomial approximation operator in Orlicz spaces. (English)Zbl 1414.41003

MSC:  41A10 41A50 46E35
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### Best polynomial approximation on the triangle. (English)Zbl 1414.41018

MSC:  41A50 33C50 42C10
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### Algorithms for positive polynomial approximation. (English)Zbl 1415.65031

MSC:  65D15 41A29 41A55
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### Chebyshev type inequality for stochastic Bernstein polynomials. (English)Zbl 1410.41012

MSC:  41A25 41A63 42B08
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### On the minimal ranks of matrix pencils and the existence of a best approximate block-term tensor decomposition. (English)Zbl 1403.15008

MSC:  15A22 15A69 41A50
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MSC:  41A05
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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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MSC:  41A05
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### The rate of convergence of hypersingular equations numerical computation. (English)Zbl 1401.41018

MSC:  41A50 78M25
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### Chebyshev interpolation for parametric option pricing. (English)Zbl 1402.91782

MSC:  91G20 91G60 41A10
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### Ahlfors problem for polynomials. (English. Russian original)Zbl 1402.30005

Sb. Math. 209, No. 3, 320-351 (2018); translation from Mat. Sb. 209, No. 3, 34-66 (2018).
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### A numerical study of Newton interpolation with extremely high degrees. (English)Zbl 1449.65010

MSC:  65D05 41A05 41A10
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### Trivariate polynomial approximation on Lissajous curves. (English)Zbl 1433.41003

MSC:  41A10 41A55 65D30
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### Approximation of several Kantorovich interpolation operators in Orlicz space. (Chinese. English summary)Zbl 1399.41002

MSC:  41A05 41A35
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### Approximation of Lagrange interpolation polynomials based on the fourth Chebyshev nodes. (Chinese. English summary)Zbl 1399.41008

MSC:  41A05 41A10
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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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### The growth of polynomials outside of a compact set-the Bernstein-Walsh inequality revisited. (English)Zbl 1375.41008

MSC:  41A17 41A50 30C10
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MSC:  41A63
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### Multivariate polynomial interpolation on Lissajous-Chebyshev nodes. (English)Zbl 1367.41023

MSC:  41A63 41A05
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### Problems and solutions in real analysis. 2nd edition. (English)Zbl 1357.26001

Series on Number Theory and Its Applications 14. Hackensack, NJ: World Scientific (ISBN 978-981-3142-81-7/hbk; 978-981-3142-82-4/pbk). xii, 363 p. (2017).
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### Polynomial pattern finding in scattered data. (English)Zbl 1372.82042

MSC:  82D37 82-08 41A50 65C60
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### Compressive sensing Petrov-Galerkin approximation of high-dimensional parametric operator equations. (English)Zbl 1358.65034

MSC:  65J10 47A50
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### Approximate solution of a singular integral equation using Chebyshev series. (Russian. English summary)Zbl 1474.65489

MSC:  65R20 45E05
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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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MSC:  41A05

### A robust and scalable implementation of the Parks-McClellan algorithm for designing FIR filters. (English)Zbl 1371.65013

MSC:  65C60 65D05 41A10 41A50 94A12 62M20
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### Multivalued extended best $$\Phi$$-polynomial approximation operator. (English)Zbl 1357.41026

MSC:  41A50 41A10 46E30
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### Chebyshev approximation by linear combinations of fixed knot polynomial splines with weighting functions. (English)Zbl 1349.90842

MSC:  90C51 41A15 41A50
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### Estimate of the norm of the Lagrange interpolation operator in the multidimensional weighted Sobolev space. (English. Russian original)Zbl 1350.41002

Math. Notes 99, No. 5, 747-756 (2016); translation from Mat. Zametki 99, No. 5, 752-763 (2016).
MSC:  41A05 46E35
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### Special wavelets based on Chebyshev polynomials of the second kind and their approximative properties. (English)Zbl 1347.42058

MSC:  42C40 41A50
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