Results 71 to 80 of about 166,195,107 (213)

Existence of Periodic and Subharmonic Solutions for Second-Order p-Laplacian Difference Equations

open access: yesAdvances in Difference Equations, 2007
We obtain a sufficient condition for the existence of periodic and subharmonic solutions of second-order p-Laplacian difference equations using the critical point theory.
Peng Chen, Hui Fang
doaj   +1 more source

Periodic Solutions of a Many-Rotator Problem in the Plane. II. Analysis of Various Motions [PDF]

open access: yes, 2003
Various solutions are displayed and analyzed (both analytically and numerically) of a recently-introduced many-body problem in the plane which includes both integrable and nonintegrable cases (depending on the values of the coupling constants); in ...
Calogero, F   +6 more
core   +2 more sources

A difference equation with eventually periodic solutions

open access: yesComputers & Mathematics with Applications, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Amleh, A.M., Hoag, J., Ladas, G.
openaire   +2 more sources

Existence of Periodic and Almost Periodic Solutions of Abstract Retarded Functional Difference Equations in Phase Spaces

open access: yesAdvances in Difference Equations, 2009
The existence of periodic, almost periodic, and asymptotically almost periodic of periodic and almost periodic of abstract retarded functional difference equations in phase spaces is obtained by using stability properties of a bounded solution.
Vidal Claudio
doaj   +2 more sources

On a Second-Order Difference Equation with Two Periodic Coefficients

open access: yesAxioms
This work focuses on a class of nonlinear second-order difference equations with non-autonomous periodic coefficients. We obtain explicit solution formulas that allow for a constructive characterization of their behavior.
Lama Sh. Aljoufi   +2 more
doaj   +1 more source

Existence of periodic solutions for higher-order nonlinear difference equations

open access: yesElectronic Journal of Differential Equations, 2016
In this article, we study a higher-order nonlinear difference equation. By using critical point theory, we establish sufficient conditions for the existence of periodic solutions.
Jianhua Leng
doaj  

On computing inner-outer factorizations of periodic systems [PDF]

open access: yes, 2013
A numerically reliable state space algorithm is proposed for computing inner-outer factorizations of causal periodic descriptor systems. The main computational ingredients are the computation of a special condensed Kronecker-like form of periodic ...
Varga, Andreas, Andreas Varga
core   +1 more source

Periodic solutions of a discrete-time diffusive system governed by backward difference equations

open access: yesAdvances in Difference Equations, 2005
A discrete-time delayed diffusion model governed by backward difference equations is investigated. By using the coincidence degree and the related continuation theorem as well as some priori estimates, easily verifiable sufficient criteria are ...
Jiezhong Zou, Binxiang Dai
doaj   +2 more sources

Reverse-Order Lower and Upper Functions for Periodic Problems of Second-Order Singular Difference Equations

open access: yesAbstract and Applied Analysis, 2013
We present sufficient conditions ensuring the lower and upper functions on the reversed-order for the periodic difference equations. This enables us to obtain the existence of positive periodic solutions of the second-order difference equation where ...
Yanqiong Lu, Ruyun Ma
doaj   +1 more source

Existence of positive periodic solutions for higher order singular functional difference equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
We study a higher order singular functional difference equation on $\mathbb{Z}$. Sufficient conditions are obtained for the existence of at least one positive periodic solution of the equation.
Jacob Johnson   +3 more
doaj   +1 more source

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