关于非线性三种群的空间周期解的注记

On Notes of Periodic Orbits between Three Nonlinear Species

利用Dulac函数构造不变集和研究奇点的性质。进一步 。

In this paper,we construct invariant sets by using Dulac function and study properties of singular point. Further,we obtain the conditions of existence of periodic orbits for GLV equation.