一类三次系统的奇点判定量
来源期刊:中南大学学报(自然科学版)1997年第1期
论文作者:刘一戎 芮嘉诰 邵润华
文章页码:85 - 86
关键词:三次系统;奇点;判定量
Key words:cubic system;odd point;focal value
摘 要:对含雅普诺夫型奇点的实平面三次微分系流给出了奇点结构的9个判定量公式,从而解决了这类奇点邻域相轨线拓扑结构的判定问题.
Abstract: In this paper, the athors study a cubic system: dx/dt=P(x,y)=a20x2+a11xy+a02y2+a30x3+a21x2y+a12xy2+a03y3 dy/dt=Q(x,y)=-y+b20x2+b11xy+b11xy+b02y2+b30x3+b21x2y+b12xy2+b03y3 and get a wonderful solution which can be used as a way telling the odd point′s type in this system. The formulas are very easy for application.