ALMOST PERIODIC-SOLUTIONS IN AN INTEGRODIFFERENTIAL EQUATION

We consider a system of integrodifferential equations [formula omitted] where f(t, x) and F(t, s, x, y) are almost periodic in t uniformly for parameters, and we assume that the system has a bounded solution u(t). To discuss the existence of an almost periodic solution, we consider the relationship between the total stability of u(t) with respect to a certain metric ρ and the separation condition with respect to ρ. Moreover, we discuss a sufficient condition for the existence of a positive almost periodic solution of a model of the dynamics of an n-species system. © 1990, Royal Society of Edinburgh. All rights reserved.