谣言
霍普夫分叉
间断(语言学)
分叉
平衡点
理论(学习稳定性)
应用数学
数学
反应扩散系统
计算机科学
扩散
统计物理学
控制理论(社会学)
控制(管理)
数学分析
非线性系统
物理
人工智能
政治学
公共关系
机器学习
热力学
量子力学
微分方程
作者
Linhe Zhu,Wenxin Zheng,Xuebing Zhang
标识
DOI:10.1142/s0218127422501097
摘要
Rumors may cause serious harm to social productivity and life. Studying the dynamics of rumor propagation can help provide corresponding countermeasures to control communication effectively. Based on the classic [Formula: see text] infectious disease model, this paper studies a rumor spreading model with a time delay caused by communication delay between rumor communicators and nonsmooth threshold propagation function in reality. In this model, we solve non-negative equilibrium points firstly. By analyzing the characteristic equations of smooth and nonsmooth rumor systems, we establish local stability at non-negative equilibrium points and find the existence of Hopf bifurcation from two aspects of diffusion coefficient and delay, respectively. In addition, considering the discontinuity of rumor system, we separate it into two systems and get the condition of Hopf bifurcation when the system is discontinuous. We further verify the feasibility of the theoretical results by simulation results.
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