School of Mathematics, Changchun Normal University, Changchun, 130032, China.
School of Mathematics and Statistics, Northeast Normal University, Changchun, 130024, China.
Sci Rep. 2017 Jun 21;7(1):3996. doi: 10.1038/s41598-017-03858-8.
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.
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。