研究了一类具有密度制约的SIS传染病模型,讨论了平衡点的存在性和稳定性,并通过构造函数,利用Lyapunov-LaSalle不变原理以及Poincare-Bendixson定理给出了该模型的全局性态分析。
In this paper,an SIS epidemic model with density-dependent was studied.The existence and stability of the equilibrium were discussed.The completely qualitative analysis of this model is obtained by Lyapunov-LaSalle invariance principle and Poincare-Bendixson theorem.