Massera criterion for periodic solutions of differential equations with piecewise constant argument

Massera criterion for periodic solutions of differential equations with piecewise constant argument ■

Trung Thanh Nguyen, Trung Thanh Nguyen, Trung Thanh Nguyen

Abstract ■

In this paper, we prove the almost periodicity of bounded solutions and a so-called Massera criterion for the existence of periodic solutions to differential equation with piecewise constant argument.