中国物理B ›› 2023, Vol. 32 ›› Issue (3): 30203-030203.doi: 10.1088/1674-1056/ac7296

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An incommensurate fractional discrete macroeconomic system: Bifurcation, chaos, and complexity

Abderrahmane Abbes1,†, Adel Ouannas2, and Nabil Shawagfeh1   

  1. 1 Department of Mathematics, University of Jordan, Amman 11942, Jordan;
    2 Department of Mathematics and Computer Science, University of Larbi Ben M'hidi, Oum El Bouaghi 04000, Algeria
  • 收稿日期:2022-03-18 修回日期:2022-05-20 接受日期:2022-05-24 出版日期:2023-02-14 发布日期:2023-02-14
  • 通讯作者: Abderrahmane Abbes E-mail:abder.abbes@gmail.com

An incommensurate fractional discrete macroeconomic system: Bifurcation, chaos, and complexity

Abderrahmane Abbes1,†, Adel Ouannas2, and Nabil Shawagfeh1   

  1. 1 Department of Mathematics, University of Jordan, Amman 11942, Jordan;
    2 Department of Mathematics and Computer Science, University of Larbi Ben M'hidi, Oum El Bouaghi 04000, Algeria
  • Received:2022-03-18 Revised:2022-05-20 Accepted:2022-05-24 Online:2023-02-14 Published:2023-02-14
  • Contact: Abderrahmane Abbes E-mail:abder.abbes@gmail.com

摘要: This study proposes a novel fractional discrete-time macroeconomic system with incommensurate order. The dynamical behavior of the proposed macroeconomic model is investigated analytically and numerically. In particular, the zero equilibrium point stability is investigated to demonstrate that the discrete macroeconomic system exhibits chaotic behavior. Through using bifurcation diagrams, phase attractors, the maximum Lyapunov exponent and the 0-1 test, we verified that chaos exists in the new model with incommensurate fractional orders. Additionally, a complexity analysis is carried out utilizing the approximation entropy (ApEn) and C0 complexity to prove that chaos exists. Finally, the main findings of this study are presented using numerical simulations.

关键词: chaos, macroeconomic system, discrete fractional calculus, complexity

Abstract: This study proposes a novel fractional discrete-time macroeconomic system with incommensurate order. The dynamical behavior of the proposed macroeconomic model is investigated analytically and numerically. In particular, the zero equilibrium point stability is investigated to demonstrate that the discrete macroeconomic system exhibits chaotic behavior. Through using bifurcation diagrams, phase attractors, the maximum Lyapunov exponent and the 0-1 test, we verified that chaos exists in the new model with incommensurate fractional orders. Additionally, a complexity analysis is carried out utilizing the approximation entropy (ApEn) and C0 complexity to prove that chaos exists. Finally, the main findings of this study are presented using numerical simulations.

Key words: chaos, macroeconomic system, discrete fractional calculus, complexity

中图分类号:  (Bifurcation theory)

  • 02.30.Oz
02.30.Sa (Functional analysis) 05.45.-a (Nonlinear dynamics and chaos) 05.45.Pq (Numerical simulations of chaotic systems)