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数学与物理
应用数学进展
Vol. 5 No. 3 (August 2016)
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一类离散SIR流行病模型的分岔和混沌分析
Bifurcation and Chaos Analysis of a Class of Discrete SIR Epidemic Models
DOI:
10.12677/AAM.2016.53048
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被引量
下载: 2,132
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国家自然科学基金支持
作者:
庞琴
,
张建刚
,
邓田
,
殷俊
,
卢加荣
:兰州交通大学数学学院,甘肃 兰州
关键词:
离散SIR模型
;
Flip分岔
;
Hopf分岔
;
混沌
;
随机参数
;
Discrete-Time SIR System
;
Flip Bifurcation
;
Hopf Bifurcation
;
Chaos
;
Random Parameter
摘要:
本文讨论了离散模型的动力学行为。得到无病平衡点和地方病平衡点的局部稳定性。结果表明,利用中心流形定理和分岔理论,模型存在Flip分岔和Hopf分岔。因此,表现出复杂的动力学行为,这些结果揭示了离散模型的更丰富的动力学行为。
Abstract:
The paper discusses the dynamical behaviors of a discrete-time SI epidemic model. The local sta-bility of the disease-free equilibrium and endemic equilibrium is obtained. It is shown that the model undergoes Flip bifurcation and Hopf bifurcation by using center manifold theorem and bi-furcation theory. So it exhibits the complex dynamical behaviors. These results reveal far richer dynamical behaviors of the discrete epidemic model.
文章引用:
庞琴, 张建刚, 邓田, 殷俊, 卢加荣. 一类离散SIR流行病模型的分岔和混沌分析[J]. 应用数学进展, 2016, 5(3): 390-398.
http://dx.doi.org/10.12677/AAM.2016.53048
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