摘要
讨论了Liemrd方程解的振荡性和有界性及极限环的存在性和不存在性.给出了几个存在奇闭轨和正(负)半轨趋向原点或无穷的充分条件,改进和补充了文(1)等的有关结果.
This paper discusses the oseillation, boundedness of solutions of Lienard equation. It also discusses the existence and non-existence of the limit cycles of the equation. It also gives some sufficient conditions for the existence of singular close trajectories and for the tendence to zero of positive (or negtive) semitrajectories of the equation.
