Existence of Positive Periodic Solutions for a Third-Order Delay Differential Equation

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Farid Nouioua, Abdelouaheb Ardjouni, Abdelkerim Merzougui, Ahcene Djoudi

Abstract

In this paper, the following third-order nonlinear delay differential equation with periodic coefficients

x”²”²”²(t)+p(t)x”²”²(t)+q(t)x”²(t)+r(t)x(t)=f(t,x(t),x(t-Ï„(t)))+c(t)x”²(t-Ï„(t)),

is considered. By employing Green's function and Krasnoselskii's fixed point theorem, we state and prove the existence of positive periodic solutions to the third-order delay differential equation.

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References

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