Lienard方程周期解的存在性(英文)

Existence for Periodic Solution of Forced Lienard Equation

利用重合度理论证明了Ｌｉｅｎａｒｄ方程在渐近非一致条件下周期解的存在性

In this paper,we use the coincidence degree theory to prove the existence for periodic solution of forced Lienard equation with nonuniform conditions at the two first eigenvalues.