On the Existence of Harmonic Solutions of Higher Dimension Lienard' s Type
Li Guanghua (Dcpt. ofMath.)
This paper we consider the Lienard systems: where ,F ∈ C2(Rn,R),G ∈ C1(Rn,R),and P ∈ C0(R,Rn,P(t+2π) = p(t). We obtain sufficient conditions for the existence of harmonic solutions of Eg (1).