一类特殊4次系统的奇点量  

The Focus Value of a Special Fourth Polynomial System

作　　者：赵梅春[1] 

机构地区：[1]广东金融学院应用数学系,广州510521

出　　处：《湖南城市学院学报（自然科学版）》2007年第4期45-46,共2页Journal of Hunan City University:Natural Science

基　　金：广东金融学院科研基金资助项目(06xj03-01)

摘　　要：研究一类特殊4次系统的中心焦点问题及hopf分岔,得到了这类系统的前15个奇点量公式,同时还得到了其他一些有用的结果.In the thesis, we study a special polynomial system. By converting the real planar system into complex system. The recursion formula for the computation of singular quantities at infinity are given, and, with Mathernatica, the first 15 singular point quantities at infinity are deduced. At the same time, the condition for the infinity to be a center and 15 degree fine focus are derived, respectively.

关 键 词：奇点量公式 中心焦点判定 特殊多项式系统 

分 类 号：O175.12[理学—数学]