Results 11 to 20 of about 5,158,783 (295)

Finite-difference solutions of tenth-order boundary-value problems [PDF]

open access: yes, 1994
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In this thesis finite difference methods are used to obtain numerical solutions for a class of high-order ordinary differential equations with applications ...
Siddiqui, Aijaz Ahmad
core   +6 more sources

Homoclinic Solutions for a Class of Nonlinear Difference Equations [PDF]

open access: yesJournal of Applied Mathematics, 2014
We prove the existence of homoclinic solutions of a class of nonlinear difference equations with superlinear nonlinearity by using the generalized Nehari manifold approach.
Ali Mai, Zhan Zhou
doaj   +3 more sources

On a Higher‐Order Nonlinear Difference Equation [PDF]

open access: yesAbstract and Applied Analysis, 2010
This paper shows that all positive solutions of a higher‐order nonlinear difference equation are bounded, extending some recent results in the literature.
openaire   +3 more sources

Symbolic Computation of Polynomial Conserved Densities, Generalized Symmetries, and Recursion Operators for Nonlinear Differential-Difference Equations [PDF]

open access: yes, 2004
Algorithms for the symbolic computation of polynomial conserved densities, fluxes, generalized symmetries, and recursion operators for systems of nonlinear differential-difference equations are presented. In the algorithms we use discrete versions of the
Jan A. S   +15 more
core   +1 more source

Spatio-temporal numerical modelling of whooping cough dynamics [PDF]

open access: yes, 2001
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The SIR (Susceptible/Infectious/Recovered) whooping cough model involving nonlinear ordinary differential equations is studied and extended to incorporate (
Piyawong, Wirawan
core   +6 more sources

On the solvability of initial-value problems for nonlinear implicit difference equations [PDF]

open access: yes, 2004
Our aim is twofold. First, we propose a natural definition of index for linear nonautonomous implicit difference equations, which is similar to that of linear differential-algebraic equations.
Pham Ky Anh   +3 more
core   +1 more source

On a Difference Equation with Exponentially Decreasing Nonlinearity [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2011
We establish a necessary and sufficient condition for global stability of the nonlinear discrete red blood cells survival model and demonstrate that local asymptotic stability implies global stability. Oscillation and solution bounds are investigated.
Elena Braverman, S. H. Saker
openaire   +4 more sources

An improvement of two nonstandard finite difference schemes for two population mathematical models [PDF]

open access: yes, 2021
The aim of this paper is to design appropriate nonstandard finite difference (NSFD) schemes for two population mathematical models based on coupled nonlinear ordinary differential equations.
Calatayud, Julia   +3 more
core   +1 more source

On the Nonlinear Difference Equation

open access: yesJournal of Applied Mathematics and Physics, 2016
In this paper, we investigate some qualitative behavior of the solutions of the difference equation where the coefficients a, b and ci are positive real numbers, and where the initial conditions are arbitrary positive real numbers.
Elmetwally M. Elabbasy   +1 more
openaire   +2 more sources

Oscillations of nonlinear difference equations with deviating arguments [PDF]

open access: yes, 2008
summary:This paper is concerned with the oscillatory behavior of first-order nonlinear difference equations with variable deviating arguments. The corresponding difference equations of both retarded and advanced type are studied.
Julio G. Dix   +6 more
core   +1 more source

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