Suchergebnisse - "Journal of numerical analysis and approximation theory"

Best approximation of Hartley-Bessel multiplier operators on weighted Sobolev spaces von Chana, Ahmed, Akhlidj, Abdellatif

“… The main goal of this paper is to introduce the Hartley-Bessel \(L^2_\alpha\)-multiplier operators and to give for them some new results as Plancherel’s, …”
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Two step Steffensen-type methods with or without memory for nondifferentiable equations von Argyros, Ioannis K., Deep, Gagan

“… A wide range of applications emerging from diverse disciplines are formulated as an equation or system of equations in abstract spaces such as Euclidean …”
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Reconstruction inversion formulas for the Laguerre Gabor transform von Hleili, Khaled, Hleili, Manel

“… In this paper, we define and study the Gabor transform in the context of the Laguerre hypergroup. We prove some of its basic properties, such as Plancherel …”
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Laurent operator-based representation of discrete solutions in the Newmark scheme with non-homogeneous terms von Zafati, Eliass

“… This paper investigates representation results for second-order evolution equations arising in structural dynamics, discretized using the Newmark time …”
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Modified adaptive quadrature by expansion for Laplace and Helmholtz layer potentials in 2D von Majidian, Hassan

“… An adaptive algorithm based on quadrature by expansion (QBX) is proposed for computing layer potentials at target points near or on a smooth boundary in …”
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On the coordinate system-dependence of the accuracy of symplectic numerical methods von Takács, Donát M., Fülöp, Tamás

“… Symplectic numerical methods have become a widely-used choice for the accurate simulation of Hamiltonian systems in various fields, including celestial …”
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Applications of the theory of generalized Fourier transforms to Tikhonov problems von Soltani, Fethi, Nemri, Akram

“… We define and study multiplier operators associated with the Sturm-Liouville operator involving a nonnegative function satisfying certain conditions. We …”
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A comparative study on balanced truncation and projection onto the dominant eigenspace of the Gramian using Laguerre functions von Islam, Shafiqul, Sayed, Saiduzzaman, Uddin, Monir, Gani, Osman

“… This paper presents a comparative analysis of two model reduction techniques: balanced truncation and projection onto the dominant eigenspace of the Gramian …”
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Products of parametric extensions: refined estimates von Gonska, Heiner

“… We present point wise estimates on approximation by bounded linear operators of real-valued continuous functions defined on the cartesian product of d compact …”
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Lebesgue constants for Cantor sets. Numerical results von Goncharov, Alexander, Görgülü, Yiğit, Paksoy, Yaman

“… We analyze numerically the form of Lebesgue functions and the values of Lebesgue constants in polynomial interpolation for three types of Cantor sets …”
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A simplified homotopy perturbation method for solving nonlinear ill-posed operator equations in Hilbert spaces von Dixit, Sharad Kumar

“… One popular regularization technique for handling both linear and nonlinear ill-posed problems is homotopy perturbation. In order to solve nonlinear ill-posed …”
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Upper and lower solution method for control of second-order Kolmogorov type systems von Hofman, Alexandru

“… In this paper, an upper and lower solution method for the control of second-order Kolmogorov systems is introduced. Two iterative algorithms, one exact and one …”
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A stable finite difference scheme for fractional viscoelastic wave propagation in space-time domain von Ait ichou, Mohamed, Ezziani, Abdelaaziz

“… This work focuses on the numerical approximation of the one dimensional wave propagation equation in a viscoelastic medium modelled by the fractional Zener …”
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Stability of piecewise flat Ricci flow in three dimensions von Conboye, Rory

“… For a recently developed piecewise flat approximation of the Ricci flow, numerical instabilities are seen to arise for a particularly useful class of …”
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A numerical approach for singularly perturbed parabolic reaction-diffusion problem on a modified graded mesh von Sah, Kishun Kumar, Gowrisankar, Subramaniam

“… This paper addresses the numerical approximations of solutions for one dimensional parabolic singularly perturbed problems of reaction-diffusion type. The …”
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Convergence analysis of iterative compositions in nonlinear modeling: exploring semilocal and local convergence phenomena von Kumar, Sunil, Janak Raj Sharma, Ioannis K. Argyros

“… In this work, a comprehensive analysis of a multi-step iterative composition for nonlinear equation is performed, providing insights into both local and …”
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ATM transaction simulation: combination of ACDs and cox process von Habibi, Reza

“… Two main approaches for analyzing the ultra-frequency data such as ATM (auto teller machine) transaction are Cox process and autoregressive conditional …”
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Some simple full-range inverse-normal approximations von Koopman, Raymond

“… Two approximations are given for numerically inverting the full range of the standard normal cumulative distribution function. The first approximation has two …”
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General multivariate arctangent function activated neural network approximations von Anastassiou, George A.

“… Here we expose multivariate quantitative approximations of Banach space valued continuous multivariate functions on a box or \(\mathbb{R}^{N}\), \(N\in …”
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A numerical study of an infeasible interior-point algorithm for convex quadratic semi-definite optimization von Bendaas, Yasmina, Achache, Mohamed

“… The focus of this research is to apply primal-dual interior-point pathfollowing methods, specifically those derived from Newton’s method for solving convex …”
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