Results 31 to 40 of about 54,203 (295)
Фізика і хімія твердого тіла, 2021 Zinc blend (zb) and wurtizite (wz) structure of cadmium selenide (CdSe) is determined using density-functional theory within local density approximation (LDA), generalized gradient approximation (GGA), Hubbard-correction (GGA+U) and Hybrid functional ...
Teshome Gerbaba Edossa +1 more
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Linear Chebyshev Approximation in the Complex Plane Using Lawson's Algorithm [PDF]
Mathematics of Computation, 1976 In this paper we discuss the application of Lawson’s algorithm for computing best linear Chebyshev approximations to complex-valued functions. Some numerical examples are also presented.
Ellacott, S., Williams, Jack
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Examples and Counterexamples, 2022 We continue the investigation on the spectrum of operators arising from the discretization of partial differential equations. In this paper we consider a three field formulation recently introduced for the finite element least-squares approximation of ...
Linda Alzaben +2 more
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Order of uniform approximation by polynomial interpolation in the complex plane and beyond
Indagationes Mathematicae, 2023 Submit to Indagationes Mathematicae, Prof. Jaap Korevaar 100-th birthday special issue, 32 pages, no figures, keywords:Lebesgue constants; Marcinkiewicz-Zygmund inequalities; Fejer points; Conformal ...
Charles K. Chui, Lefan Zhong
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The aproximation of functions in generalized Holder spaces [PDF]
Computer Science Journal of Moldova, 1996 The theorems of approximation of complex functions determined on the closed arbitrary contour Г of the complex plane by means of Lagrange interpolating polynomials in generalized Holder spaces Hw were obtained.
V. Zolotarevski, G. Andriesh
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Universal approximation theorem for Dirichlet series
International Journal of Mathematics and Mathematical Sciences, 2006 The paper deals with an extension theorem by Costakis and Vlachou on simultaneous approximation for holomorphic function to the setting of Dirichlet series, which are absolutely convergent in the right half of the complex plane.
O. Demanze, A. Mouze
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Complex approximation by real approximation [PDF]
مجلة جامعة الانبار للعلوم الصرفةIt is known that approximation of the complex functions does not, in general, depend on approximation of the real functions. However, if the complex function is viewed as a Cartesian product of two real functions, a relationship appears between the two ...
Jawad Judy
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Approximation by Zygmund means in variable exponent Lebesque spaces [PDF]
Mathematica Moravica, 2019 In the present work we investigate the approximation of the functions by the Zygmund means in variable exponent Lebesgue spaces. Here the estimate which is obtained depends on sequence of the best approximation in Lebesgue spaces with variable exponent ...
Jafarov Sadulla Z.
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Generalized weighted Sobolev spaces and applications to Sobolev orthogonal polynomials, I [PDF]
, 2004 36 pages, no figures.-- MSC2000 codes: 41A10, 46E35, 46G10.-- Part II of this paper published in: Approx. Theory Appl. 18(2): 1-32 (2002), available at: http://e-archivo.uc3m.es/handle/10016/6483MR#: MR2047389 (2005k:42062)Zbl#: Zbl 1081.42024In this ...
Pestana, Domingo +3 more
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Methods of Spline Functions in Solving Problems of Telecommunication and Information Technologies
Proceedings of the International Conference on Applied Innovations in IT, 2023 The solution to problems of telecommunications and information technologies using spline approximation and spline extrapolation based on real and complex spline functions is considered.
Irina Strelkovskaya +2 more
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