Results 21 to 30 of about 217,177 (294)
Energies, 2022 This paper proposes a rational approximation-based approach to find positive real parameters for the extended Debye model (EDM), aimed at condition assessment of insulation systems of power transformers.
Giovanni Hernandez, Abner Ramirez
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A method to obtain the best uniform polynomial approximation for the family of rational function [PDF]
Iranian Journal of Optimization, 2015 In this article, by using Chebyshev’s polynomials and Chebyshev’s expansion, we obtain the best uniform polynomial approximation out of P2n to a class of rational functions of the form (ax2+c)-1 on any non symmetric interval [d,e].
M. A. Fariborzi Araghi, F. Froozanfar
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Exact solution of the Percus-Yevick integral equation for fluid mixtures of hard hyperspheres [PDF]
, 2011 Structural and thermodynamic properties of multicomponent hard-sphere fluids at odd dimensions have recently been derived in the framework of the rational function approximation (RFA) [Rohrmann and Santos, Phys. Rev. E \textbf{83}, 011201 (2011)].
Rohrmann, René D., Santos, Andrés
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Approximation Theory XV: San Antonio 2016 [PDF]
, 2017 These proceedings are based on papers presented at the international conference Approximation Theory XV, which was held May 22\u201325, 2016 in San Antonio, Texas.
DE MARCHI, Stefano +2 more
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Multivariate approximation by polynomial and generalized rational functions
Optimization, 2022 In this paper we develop an optimisation based approach to multivariate Chebyshev approximation on a finite grid. We consider two models: multivariate polynomial approximation and multivariate generalised rational approximation. In the second case the approximations are ratios of linear forms and the basis functions are not limited to monomials.
R. Díaz Millán +3 more
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Researches in MathematicsThe paper considers the classical problem of the rational approximation of analytic functions of complex variable, in particulary, to issues that arise when constructing branched continued fraction expansions for generalized hypergeometric functions ...
Y. Lutsiv +3 more
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Approximation by quotients of rational inner functions [PDF]
Proceedings of the American Mathematical Society, 1979 Let u be a continuous unimodular function on the n-dimensional torus T n {T^n} . It is shown that u can be uniformly approximated by quotients of rational inner functions.
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PLoS ONE, 2023 Support vector machine (SVM) is a new machine learning method developed from statistical learning theory. Since the objective function of the unconstrained SVM model is a non-smooth function, a lot of fast optimization algorithms can't be used to find ...
Jianjian Wang, Feng He, Shouheng Sun
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Arithmetic purity of strong approximation for homogeneous spaces [PDF]
, 2018 We prove that any open subset $U$ of a semi-simple simply connected quasi-split linear algebraic group $G$ with ${codim} (G\setminus U, G)\geq 2$ over a number field satisfies strong approximation by establishing a fibration of $G$ over a toric variety ...
Cao, Y., Liang, Y., Xu, F.
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The Investigation of the Discrete Universality of L-Functions of Elliptic Curves
Jaunųjų Mokslininkų Darbai, 2022 In the paper, we prove the discrete universality theorem in the sense of the weak convergence of probability measures in the space of analytic functions for the L-functions of elliptic curves.
Samanta Zakaitė, Antanas Garbaliauskas
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