摘要
讨论了二次系统（Ⅱ）δ＝０具有二阶细焦点的条件，并对ｎ＝０时以原点Ｏ（０，０）为二阶细焦点的二次系统（Ⅱ）δ＝０作了全局分析。
This paper discusses the conditions of the quadratic systems (Ⅱ) δ=0 with second order fine focus. When n =0, the global analysis are made to the quadratic systems (Ⅱ) δ=0 with the origin O (0,0) as second order fine focus.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第1期102-106,共5页
Journal of South China University of Technology(Natural Science Edition)
关键词
二次系统
细焦点
奇点
全局分析
quadratic systems
fine focus
singular point
global analysis
