Results 61 to 70 of about 1,387,267 (186)

Periodic boundary value problems of second order random differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2009
In this paper, an existence and the existence of extremal random solutions are proved for a periodic boundary value problem of second order ordinary random differential equations.
Bapurao Dhage   +2 more
doaj   +1 more source

PERIODIC SOLUTIONS OF A SECOND ORDER EVOLUTIVE VARIATIONAL INEQUALITY

open access: yesRatio Mathematica, 1995
Hereafter we shall analyse the existence and regularity properties of the solution of the periodic problem related to a second order evolutive variational inequality.
M. Biancardi, A. Gallo
doaj  

Periodic solutions of non-autonomous second order systems with p-Laplacian

open access: yesElectronic Journal of Differential Equations, 2009
We prove the existence of periodic solutions for non-autonomous second order systems with p-Laplacian. Our main tools are the minimax methods in critical point theory. Our results are new, even when p=2.
Jihui Zhang, Zhiyong Wang
doaj  

Nontrivial Periodic Solutions for Nonlinear Second-Order Difference Equations

open access: yesDiscrete Dynamics in Nature and Society, 2011
This paper is concerned with the existence of nontrivial periodic solutions and positive periodic solutions to a nonlinear second-order difference equation.
Tieshan He   +3 more
doaj   +1 more source

Periodic solutions for second order differential equations with indefinite singularities

open access: yesAdvances in Nonlinear Analysis, 2019
In this paper, the problem of periodic solutions is studied for second order differential equations with indefinite ...
Lu Shiping, Yu Xingchen
doaj   +1 more source

A condition on the potential for the existence of doubly periodic solutions of a semi-linear fourth-order partial differential equation

open access: yesElectronic Journal of Differential Equations, 2000
We study the existence of solutions to the fourth order semi-linear equation $Delta ^2u=g(u)+h(x)$. We show that there is a positive constant $C_*$, such that if $g(xi )xi geq 0$ for $|xi |geq xi _0$ and $limsup _{|xi |o infty } 2G(xi )/xi ...
Chen Chang
doaj  

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