Results 21 to 30 of about 69,720 (262)

Nonlinear Approximation by $q$-Favard-Sz{\'a}sz-Mirakjan Operators of Max-Product Kind

Communications in Advanced Mathematical Sciences, 2023
In this study, nonlinear $q$-Favard-Sz{\'a}sz-Mirakjan operators of max-product kind are defined and approximation properties of these operators are investigated. Classical approximation and $A$-statistical approximation theorems are given.
Ecem Acar, Döne Karahan
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An Iterative Method Based on the Marginalized Particle Filter for Nonlinear B-Spline Data Approximation and Trajectory Optimization

Mathematics, 2019
The B-spline function representation is commonly used for data approximation and trajectory definition, but filter-based methods for nonlinear weighted least squares (NWLS) approximation are restricted to a bounded definition range.
Jens Jauch, Felix Bleimund, Michael Frey, Frank Gauterin   +3 more
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A Meshfree Approach for Solving Fractional Galilei Invariant Advection–Diffusion Equation through Weighted–Shifted Grünwald Operator

Mathematics, 2022
Fractional Galilei invariant advection–diffusion (GIADE) equation, along with its more general version that is the GIADE equation with nonlinear source term, is discretized by coupling weighted and shifted Grünwald difference approximation formulae and ...
Farzaneh Safari, Qingshan Tong, Zhen Tang, Jun Lu   +3 more
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Nonlinear least squares method

Communications, 1999
The paper deals with a comparison of linear and nonlinear least squares approximation. Its aim is to show that the well known transformations of nonlinear dependencies on linear dependencies do not always give exact results.
Jaromír Máca, Bohus Leitner
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Nonlinear Ritz Approximation for the Camassa-Holm Equation by Using the Modify Lyapunov-Schmidt method

مجلة بغداد للعلوم, 2023
            In this work, the modified Lyapunov-Schmidt reduction is used to find a nonlinear Ritz approximation of Fredholm functional defined by the nonhomogeneous Camassa-Holm equation and Benjamin-Bona-Mahony.
hadeel G. Abd Ali, Mudhir A. Abdul Hussain   +1 more
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Nonlinear Approximation by Trigonometric Sums [PDF]

Journal of Fourier Analysis and Applications, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
DeVore, R.A., Temlyakov, V.N.
openaire   +2 more sources

New a posteriori error estimates for hp version of finite element methods of nonlinear parabolic optimal control problems

Journal of Inequalities and Applications, 2016
In this paper, we investigate residual-based a posteriori error estimates for the hp version of the finite element approximation of nonlinear parabolic optimal control problems.
Zuliang Lu, Hongyan Liu, Chunjuan Hou, Longzhou Cao   +3 more
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The Effects of Padé Numerical Integration in Simulation of Conservative Chaotic Systems

Entropy, 2019
In this paper, we consider nonlinear integration techniques, based on direct Padé approximation of the differential equation solution, and their application to conservative chaotic initial value problems.
Denis Butusov, Artur Karimov, Aleksandra Tutueva, Dmitry Kaplun, Erivelton G. Nepomuceno   +4 more
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Improving the ensemble transform Kalman filter using a second-order Taylor approximation of the nonlinear observation operator [PDF]

Nonlinear Processes in Geophysics, 2014
The ensemble transform Kalman filter (ETKF) assimilation scheme has recently seen rapid development and wide application. As a specific implementation of the ensemble Kalman filter (EnKF), the ETKF is computationally more efficient than the conventional ...
G. Wu, X. Yi, L. Wang, X. Liang, S. Zhang, X. Zhang, X. Zheng   +6 more
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The Theory and Applications of Hölder Widths

Axioms
We introduce the Hölder width, which measures the best error performance of some recent nonlinear approximation methods, such as deep neural network approximation. Then, we investigate the relationship between Hölder widths and other widths, showing that
Man Lu, Peixin Ye
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