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Limit Cycles and Local Bifurcation of Critical Periods in a Class of Switching Z2 Equivariant Quartic System

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  • Jian Yang
  • Jukun Liu
  • Jingping Lu
  • Chunrui Zhang

Abstract

In this paper, the limit cycles and local bifurcation of critical periods for a class of switching Z2 equivariant quartic system with two symmetric singularities are investigated. First, through the computation of Lyapunov constants, the conditions of the two singularities to become the centers are determined. Then, we prove that there are at most 18 limit cycles with a distribution pattern of 9-9 around the two symmetric singular points of the system. Numerical simulation is conducted to validate the obtained results. Furthermore, by calculating the period constants, we determine the conditions for the critical point to be a weak center of finite order. Finally, the number of local critical periods that bifurcate from the equilibrium point under the center conditions is discussed. This study presents the first example of a quartic switching smooth system with 18 limit cycles and 4 local critical periods bifurcating from two symmetric singular points.

Suggested Citation

  • Jian Yang & Jukun Liu & Jingping Lu & Chunrui Zhang, 2024. "Limit Cycles and Local Bifurcation of Critical Periods in a Class of Switching Z2 Equivariant Quartic System," Discrete Dynamics in Nature and Society, Hindawi, vol. 2024, pages 1-12, May.
  • Handle: RePEc:hin:jnddns:4786384
    DOI: 10.1155/2024/4786384
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