关于 n 维动力系统周期轨道的存在性

Existence of the period orbits of n dimensional dynamical system

给出ｎ维动力系统的形式，并把二维动力系统周期轨道的存在性结论推广到ｎ维动力系统．

This paper gives the form of n dimensional dynamical system and spreads the theory about the existence of the period orbits of two dimensional dynamical system to n dimensional one.