一类奇次微分系统的定性分析

Qualitative Analysis on a Class of Odd Power Differntial Systems

得到一类奇次微分系统ｘ＝－ｙ＋δｘ＋ａｘ２ｍ＋ｂｘ２ｎ＋１，ｙ＝ｘ２ｌ－１｛（ｌ，ｍ，ｎ∈Ｎ，ｍ≤ｎ）极限环的存在性、唯一性和不存在性的完整结果．

This paper obtains complete results of the existence,uniqueness and nonexistence of limit cycles for a class of odd power differential systems.