Results 1 to 10 of about 159,062 (288)

Transversal homoclinics in nonlinear systems of ordinary differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2000
Bifurcation of transversal homoclinics is studied for a pair of ordinary differential equations with periodic perturbations when the first unperturbed equation has a manifold of homoclinic solutions and the second unperturbed equation is vanishing.
Michal Fečkan
doaj   +3 more sources

Nonlinear boundary value conditions and ordinary differential systems with impulsive effects [PDF]

open access: yesBoundary Value Problems, 2017
We investigate solutions to nonlinear operator equations which are difficult to investigate with variational methods and obtain some abstract existence results by topology degree methods.
Tingting Hu
doaj   +3 more sources

Numerical simulation of a nonlinear hepatitis B virus mathematical model using the Dickson collocation technique [PDF]

open access: yesScientific Reports
This work introduces an innovative nonlinear model of hepatitis B virus (HBV) dynamics, emphasizing the utilization of the Dickson collocation method for numerical simulation.
Atallah El-Shenawy   +2 more
doaj   +2 more sources

Approximate Methods for Solving Problems of Mathematical Physics on Neural Hopfield Networks

open access: yesMathematics, 2022
A Hopfield neural network is described by a system of nonlinear ordinary differential equations. We develop a broad range of numerical schemes that are applicable for a wide range of computational problems.
Ilya Boykov   +2 more
doaj   +1 more source

An Approximate Optimization Method for Solving Stiff Ordinary Differential Equations With Combinational Mutation Strategy of Differential Evolution Algorithm

open access: yesMendel, 2022
This paper examines the implementation of simple combination mutation of differential evolution algorithm for solving stiff ordinary differential equations.
Werry Febrianti   +2 more
doaj   +1 more source

Neural Ordinary Differential Equations for Nonlinear System Identification

open access: yes2022 American Control Conference (ACC), 2022
Neural ordinary differential equations (NODE) have been recently proposed as a promising approach for nonlinear system identification tasks. In this work, we systematically compare their predictive performance with current state-of-the-art nonlinear and classical linear methods.
Rahman, Aowabin   +3 more
openaire   +2 more sources

Editorial for Special Issue “Recent Advances in Fractional Differential Equations, Delay Differential Equations and Their Applications”

open access: yesFractal and Fractional, 2022
Differential equations, both fractional and ordinary, give key tools in understanding the mechanisms of physical systems and solving various problems of nonlinear phenomena [...]
Omar Bazighifan
doaj   +1 more source

Differential difference inequalities related to parabolic functional differential equations [PDF]

open access: yesOpuscula Mathematica, 2010
Initial boundary value problems for nonlinear parabolic functional differential equations are transformed by discretization in space variables into systems of ordinary functional differential equations.
Milena Netka
doaj   +1 more source

Existence of a Periodic Solution for Nonlinear Systems of Differential Equations with Retarded Argument [PDF]

open access: yesمجلة التربية والعلم, 2005
In this paper we investigate the existence and approximation of the periodic solutions for nonlinear systems of differential equations with retarded argument, by using the method of periodic solutions of ordinary differential equation which are given be ...
Raad N.Butris, Ayad S.Seeto
doaj   +1 more source

Fuzzy Differential Equations for Nonlinear System Modeling With Bernstein Neural Networks

open access: yesIEEE Access, 2016
With the fuzzy set theory, the uncertainty of nonlinear systems can be modeled using fuzzy differential equations. The solutions of these equations are the model output, but they are very difficult to obtain.
Raheleh Jafari, Wen Yu, Xiaoou Li
doaj   +1 more source

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