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Chaotic dynamics in some fractional predator–prey models via a new Caputo operator based on the generalised Gamma function

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  • Matouk, A.E.
  • Lahcene, Bachioua

Abstract

We introduce a generalisation of the Caputo fractional differential operator by replacing the Euler Gamma function in the basic operator with the generalised Gamma function. The generalised Caputo operator has a new degree of freedom (fractional parameter) that affects the dynamics of the model. The basic mathematical properties of the generalised Caputo operator are discussed. Then, we apply this generalised fractional operator to some predator–prey models, such as the fractional Hastings–Powell food chain model and the fractional generalised Lotka–Volterra model. The simulation results show that the two systems exhibit a variety of chaotic attractors when the new operator's parameter is varied.

Suggested Citation

  • Matouk, A.E. & Lahcene, Bachioua, 2023. "Chaotic dynamics in some fractional predator–prey models via a new Caputo operator based on the generalised Gamma function," Chaos, Solitons & Fractals, Elsevier, vol. 166(C).
    • Handle: RePEc:eee:chsofr:v:166:y:2023:i:c:s0960077922011250
    DOI: 10.1016/j.chaos.2022.112946
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    References listed on IDEAS

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    1. Kumar, Sunil & Kumar, Ranbir & Cattani, Carlo & Samet, Bessem, 2020. "Chaotic behaviour of fractional predator-prey dynamical system," Chaos, Solitons & Fractals, Elsevier, vol. 135(C).
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    6. Matouk, A.E., 2020. "Complex dynamics in susceptible-infected models for COVID-19 with multi-drug resistance," Chaos, Solitons & Fractals, Elsevier, vol. 140(C).
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