Abstract

This paper deals with the existence and stability of periodic solutions for the following nonlinear neutral functional differential equation(d/dt)Dut=p(t)-au(t)-aqu(t-r)-h(u(t),u(t-r)).By using Schauder-fixed-point theorem and Krasnoselskii-fixed-point theorem, some sufficient conditions are obtained for the existence of asymptotic periodic solutions. Main results in this paper extend the related results due to Ding (2010) and Lopes (1976).

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