本文讨论了一类在单种营养物输入的未搅拌恒化器中的简单食物网模型,该模型除了营养物以外,还包含有一个捕食者种群和两个竞争的食饵种群.应用Dancer不动点指数和度理论的知识,给出了该系统共存态存在的充分必要条件.
In this paper, we discuss a simple food web model consisting ot one predator and two competing prey populations in an un-stirred chemostat with a single nutrient input. The necessary and sufficient conditions for the existence of coexistence states are established, and the main tools used here are Dancer fixed point index and the degree theory.