具有有限时滞的Lotka-Volterra方程的周期解分歧现象

The Bifurcation Phenomenon of the Periodic Solutions of Lotka-Volterra Systems with Finite Delay

本文研究方程其中，R，γ，α为正常数，我们给出方程组（*）的解出现周期解分歧现象的一个条件．

In this paper, we investigate the following systems where R, γ, α are positive constants.We now obtain a condition what the periodic bifurcation phenomenon happens to the solu-tion of the systems (*)