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has been cited by the following article:

• TITLE: Local Dynamics of a New Four-Dimensional Quadratic Autonomous System

  AUTHORS: Sengen Hu, Liangqiang Zhou

  KEYWORDS: Four-Dimensional Autonomous System, Routh-Hurwitz Criterion, Hopf Bifurcation, Hyperchaos

  JOURNAL NAME: Journal of Applied Mathematics and Physics, Vol.10 No.9, September 14, 2022

  ABSTRACT: In this manuscript, Local dynamic behaviors including stability and Hopf bifurcation of a new four-dimensional quadratic autonomous system are studied both analytically and numerically. Determining conditions of equilibrium points on different parameters are derived. Next, the stability conditions are investigated by using Routh-Hurwitz criterion and bifurcation conditions are investigated by using Hopf bifurcation theory, respectively. It is found that Hopf bifurcation on the initial point is supercritical in this four-dimensional autonomous system. The theoretical results are verified by numerical simulation. Besides, the new four-dimensional autonomous system under the parametric conditions of hyperchaos is studied in detail. It is also found that the system can enter hyperchaos, first through Hopf bifurcation and then through periodic bifurcation.