研究了一类原点为三次幂零奇点的三次微分系统。

A class of cubic differential system is studied in this paper, in which origin is nilpotent singular point.

youdao

研究了一类原点为三次幂零奇点的三次微分系统。

A class of cubic differential system is studied in this paper, in which origin is nilpotent singular point.

youdao