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Abstract
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International Journal of Mathematics and Mathematical Sciences
Volume 18 (1995), Issue 2, Pages 265-272
doi:10.1155/S0161171295000329

Existence of periodic solutions for nonlinear Liénard systems

Wan Se Kim

Department of Mathematics, Dong-A University, Pusan 604 714, Korea

Abstract

We prove the existence and multiplicity of periodic solutions for nonlinear Lienard System of the type x″(t)+ddt[∇F(x(t))]+g(x(t))+h(t,x(t))=e(t) under various conditions upon the functions g, h and e.