Results 111 to 120 of about 456,539 (203)

Oscillation of solutions to delay differential equations with positive and negative coefficients

open access: yesElectronic Journal of Differential Equations, 2000
In this article we present infinite-integral conditions for the oscillation of all solutions of first-order delay differential equations with positive and negative coefficients.
El M. Elabbasy   +2 more
doaj  

Multiple positive solutions for integro-differential equations with integral boundary conditions and sign changing nonlinearities

open access: yesElectronic Journal of Differential Equations, 2012
In this article, we show the existence of multiple positive solutions for integro-differential equations with one-dimensional p-Laplacian operator, sign changing nonlinearities, and integral boundary conditions.
Mei Jia, Pingyou Wang
doaj  

Classification of Positive Solutions of Nonlinear Systems of‎ ‎Volterra Integral Equations

open access: yesAnnals of Functional Analysis, 2011
‎We give asymptotic classification of the positive solutions of a class of‎ ‎two-dimensional nonlinear Volterra integro-differential equations‎. ‎Also‎, ‎we furnish necessary and sufficient conditions for the existence of such‎ ‎positive solutions‎.
openaire   +2 more sources

On the asymptotic behavior of positive solutions of certain integral equations

open access: yesApplied Mathematics Letters, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Existence and uniqueness of positive almost periodic solutions for systems of nonlinear delay integral equations

open access: yesElectronic Journal of Differential Equations, 2015
This article shows the existence and uniqueness of positive almost periodic solutions for some systems of nonlinear delay integral equations. After constructing a new fixed point theorem in the cone, which extend some existing results even in the case
Abdellatif Sadrati, Abderrahim Zertiti
doaj  

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