Electronic Journal of Differential Equations (Apr 2015)
Existence and uniqueness of positive almost periodic solutions for systems of nonlinear delay integral equations
Abstract
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 of scalar version, we apply it to a model of the evolution in time of two species in interaction.