Existence Results on Positive Periodic Solutions for Impulsive Functional Differential Equations
نویسندگان
چکیده
A class of first order nonlinear functional differential equations with impulses is studied. It is shown that there exist one or two positive T -periodic solutions under certain assumptions, and no positive T -periodic solution under some other assumptions. Applications to some impulsive biological models and an example, which can not be covered by known results, are given to illustrate the main results.
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تاریخ انتشار 2011