Article ID Journal Published Year Pages File Type
841243 Nonlinear Analysis: Theory, Methods & Applications 2009 7 Pages PDF
Abstract

We establish the existence of periodic solutions for the second order non-autonomous singular coupled systems {x″+a1(t)x=f1(t,y(t))+e1(t),y″+a2(t)y=f2(t,x(t))+e2(t). The proof relies on Schauder’s fixed point theorem. Some recent results in the literature are generalized and improved.

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Periodic solutions of second order singular coupled systems
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