摘要
本文证得一个四次系统，它以三次曲线的闭分支为极限环。本文说明三次曲线极限环上。果不存在于二次系统内[1]，它可以存在于四次系统内。
This paper proved an Quartic system. closed branch of Cubie Curve is Quartic systemlimit cycle, It proved the cubic Curve limit cycle can exist in Quartic system.
出处
《长春光学精密机械学院学报》
1997年第3期55-58,共4页
Journal of Changchun Institute of Optics and Fine Mechanics
