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Periodic solutions for second order singular damped differential equations. (English) Zbl 1232.34065
Summary: We study the existence of positive periodic solutions for second order singular damped differential equations by combining the analysis of the sign of Green’s functions for the linear damped equation, together with a nonlinear alternative principle of Leray-Schauder. Recent results in the literature are generalized and significantly improved.

34C25Periodic solutions of ODE
Full Text: DOI
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