Results 11 to 20 of about 670,956 (337)

Nonlinear Bivariate Bernstein–Chlodowsky Operators of Maximum Product Type

open access: yesJournal of Mathematics, 2022
The positive nonlinear operators with maximum and product were introduced by Bede. In this study, nonlinear maximum product type of bivariate Bernstein–Chlodowsky operators is defined and the approximation properties are investigated with the help of new
Özge Özalp Güller   +2 more
doaj   +1 more source

On the Approximation of Moments for Nonlinear Systems [PDF]

open access: yesIEEE Transactions on Automatic Control, 2021
Model reduction by moment-matching relies upon the availability of the so-called moment . If the system is nonlinear, the computation of moments depends on an underlying specific invariance equation, which can be difficult or impossible to solve. This article presents four technical contributions related to the theory of moment matching: first, we ...
Nicolás Faedo   +3 more
openaire   +5 more sources

The complexity of approximating a nonlinear program [PDF]

open access: yesMathematical Programming, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mihir Bellare, Phillip Rogaway
openaire   +1 more source

A nonlinear quantum adiabatic approximation [PDF]

open access: yesNonlinearity, 2020
Abstract This paper is devoted to a generalisation of the quantum adiabatic theorem to a nonlinear setting. We consider a Hamiltonian operator which depends on the time variable and on a finite number of parameters and acts on a separable Hilbert space of which we select a fixed basis.
Fermanian Kammerer, Clotilde   +1 more
openaire   +3 more sources

Some Novel Solutions to a Quadratically Damped Pendulum Oscillator: Analytical and Numerical Approximations

open access: yesComplexity, 2022
In this paper, some novel analytical and numerical techniques are introduced for solving and analyzing nonlinear second-order ordinary differential equations (ODEs) that are associated to some strongly nonlinear oscillators such as a quadratically damped
Alvaro H. Salas   +3 more
doaj   +1 more source

A fourth-order approximation Rayleigh-Plesset equation written in volume variation for an adiabatic-gas bubble in an ultrasonic field: Derivation and numerical solution

open access: yesResults in Physics, 2021
The derivation of a nonlinear ordinary differential equation for modeling the nonlinear oscillations of a gas bubble placed in an ultrasonic field is performed in terms of bubble-volume variations up to the fourth-order approximation.
Christian Vanhille
doaj   +1 more source

On the stability of a class of essentially nonlinear difference systems

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
The problem of the zero solution stability for a certain class of essentially nonlinear difference systems is studied. Theorems on the stability by the inhomogeneous approximation are proved.
A. A. Sultanbekov
doaj   +3 more sources

Controllability distributions and systems approximations: a geometric approach [PDF]

open access: yes, 1992
Given a nonlinear system, a relation between controllability distributions defined for a nonlinear system and a Taylor series approximation of it is determined. Special attention is given to this relation at the equilibrium.
Nijmeijer, H., Ruiz, A.C.
core   +3 more sources

Nonlinear quasi-normal modes: uniform approximation

open access: yesJournal of High Energy Physics, 2023
Recent works have suggested that nonlinear (quadratic) effects in black hole perturbation theory may be important for describing a black hole ringdown.
Bruno Bucciotti   +3 more
doaj   +1 more source

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

open access: yesCommunications 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
doaj   +1 more source

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