Results 11 to 20 of about 380,567 (310)

Nonlocal Integro-Differential Equations of the Second Order with Degeneration

open access: yesMathematics, 2020
We study the solvability for boundary value problems to some nonlocal second-order integro–differential equations that degenerate by a selected variable.
Aleksandr I. Kozhanov
doaj   +1 more source

Difference equations with impulses [PDF]

open access: yesOpuscula Mathematica, 2019
Difference equations with impulses are studied focussing on the existence of periodic or bounded orbits, asymptotic behavior and chaos. So impulses are used to control the dynamics of the autonomous difference equations.
Marius Danca   +2 more
doaj   +1 more source

Unbounded rational systems with nonconstant coefficients

open access: yesNonautonomous Dynamical Systems, 2022
We show the existence of unbounded solutions to difference equations of the form {xn+1=c′nxnBnyn,yn+1=bnxn+cnynAn+Cnyn     for   n=0,1,…,\left\{ {\matrix{{{x_{n + 1}} = {{{{c'}_n}{x_n}} \over {{B_n}{y_n}}},} \hfill \cr {{y_{n + 1}} = {{{b_n}{x_n} + {c_n}
Kudlak Zachary, Vernon R. Patrick
doaj   +1 more source

A rational difference equation

open access: yesComputers & Mathematics with Applications, 2001
The authors investigate the nonlinear rational difference equation \[ x_{n+1}= (\alpha x_n+ \beta x_{n-1})/(A+x_{n-1}),\;n=0,1,2,\dots, \tag{*} \] where the parameters \(\alpha,\beta\) and \(A\) and the initial conditions \(x_{-1}\) and \(x_0\) are nonnegative real numbers.
Kulenović, M. R.S.   +2 more
openaire   +4 more sources

Three complex differential-difference equations

open access: yesPartial Differential Equations in Applied Mathematics, 2022
In this paper, we propose three complex differential-difference equations related to the integrable differential-difference equations.
Hasi Gegen, Xing-Biao Hu
doaj   +1 more source

Parametrical identification of the special equation Ricatti on the basis of stochastic difference equations

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2008
Construction stochastic difference equations connecting results of supervision of instant values of dynamic processes described by special equation Ricatti, is considered.
A. S. Ovsienko   +1 more
doaj   +1 more source

On generalized difference equations [PDF]

open access: yesApplications of Mathematics, 1987
The authors consider linear difference equations with several independent variables, the solutions of which are functions defined on sets of n- dimensional vectors with integer coordinates. Existence and uniqueness theorems are formulated and proved for these equations.
Jiří Gregor, Miroslav Bosák
openaire   +1 more source

On a Difference-Delay Equation

open access: yesJournal of Mathematical Analysis and Applications, 2000
The behaviour of continuous real solutions \(f(t)\) to the equation \[ f(t)=a_1f(t+h_1) +a_2f(t+h_2) \] and its dependence on the real positive constants \(a_1,a_2, h_1,h_2\) is studied. Definite answers are given except in the case \(h_1/h_2\) is rational.
Adam Ostaszewski, Roy O. Davies
openaire   +3 more sources

Transformations of Difference Equations II

open access: yesAdvances in Difference Equations, 2010
This is an extension of the work done by Currie and Love (2010) where we studied the effect of applying two Crum-type transformations to a weighted second-order difference equation with non-eigenparameter-dependent boundary conditions at the end points.
Currie Sonja, Love AnneD
doaj   +2 more sources

Solutions for Several Quadratic Trinomial Difference Equations and Partial Differential Difference Equations in C2

open access: yesAxioms, 2021
This article is to investigate the existence of entire solutions of several quadratic trinomial difference equations f(z+c)2+2αf(z)f(z+c)+f(z)2=eg(z), and the partial differential difference equations f(z+c)2+2αf(z+c)∂f(z)∂z1+∂f(z)∂z12=eg(z),f(z+c)2+2αf ...
Hong Li, Hongyan Xu
doaj   +1 more source

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