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关于具有饱和发生率的随机 SEIR 传染病模型的平稳分布的注释。

A note on the stationary distribution of stochastic SEIR epidemic model with saturated incidence rate.

机构信息

School of Mathematics, Changchun Normal University, Changchun, 130032, China.

School of Mathematics and Statistics, Northeast Normal University, Changchun, 130024, China.

出版信息

Sci Rep. 2017 Jun 21;7(1):3996. doi: 10.1038/s41598-017-03858-8.

Abstract

The stochastic SEIR infectious diseases model with saturated incidence rate is studied in this paper. By constructing appropriate Lyapunov functions, we show that there is a stationary distribution for the system and the ergodicity holds provided [Formula: see text] > 1. In particular, we improve the results obtained by previous studies greatly, condition in our Theorem is more concise and elegant.

摘要

本文研究了具有饱和发生率的随机 SEIR 传染病模型。通过构造适当的李雅普诺夫函数,我们证明了系统存在一个平稳分布,并且在[Formula: see text] > 1 时系统具有遍历性。特别地,我们大大改进了前人研究的结果,我们定理中的条件更加简洁和优美。

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