摘要为研究无症状病人对疾病传播的影响,本文研究了一类带有无症状病人的SISIa传染病模型,得出基本再生数和平衡点的存在性.通过选取恰当的Lyapunov函数和Dulac函数,利用Lasalle不变性原理和Bendixson-Dulac原理证明平衡点的全局渐近稳定性,并且发现此模型在边界平衡点会出现折分支和Bogdanov-Takens分支现象.由此可见,无症状病人在传染病传播过程中会导致系统产生复杂的动力学性态. | | 服务 | | | 加入引用管理器 | | E-mail Alert | | RSS | 收稿日期: 2020-07-07 | | 基金资助:国家自然科学基金(11401002,11771001),安徽省自然科学基金(2008085MA02)和安徽省高等学校自然科学基金(KJ2018A0029)资助. |
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