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Bifurcation Analysis of a Discrete‐Time Chemostat Model

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  • Khalil Salem Nemer Al-Basyouni
  • Abdul Qadeer Khan

Abstract

In this article, a discretized two‐dimensional chemostat model is investigated. By using the algebraic technique, it is proved that the discrete chemostat model has semitrivial equilibrium solution for all involved parametric values, but it has an interior equilibrium solution under certain parametric conditions. We have studied the local dynamics with topological classifications about the semitrivial and interior equilibrium solution on the basis of the theory of the discrete dynamical system. By bifurcation theory, we studied the existence of bifurcations for the understudied discrete chemostat model and proved that at a semitrivial equilibrium solution, it did not undergo flip bifurcation, but it undergoes flip bifurcation at interior equilibrium solution, and no other bifurcation occurs at this point. It has also explored the existence of periodic points and chaos control by the state feedback method. Finally, with the help of MATLAB software, flip bifurcation diagrams and corresponding maximum Lyapunov exponents were also presented. These numerical simulations not only show the correctness of theoretical results but also reveal the complex dynamics such as the orbits of period −7, −8, −13, and −16.

Suggested Citation

  • Khalil Salem Nemer Al-Basyouni & Abdul Qadeer Khan, 2023. "Bifurcation Analysis of a Discrete‐Time Chemostat Model," Mathematical Problems in Engineering, John Wiley & Sons, vol. 2023(1).
    • Handle: RePEc:wly:jnlmpe:v:2023:y:2023:i:1:n:7518261
    DOI: 10.1155/2023/7518261
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    1. Stephen Lynch, 2007. "Dynamical Systems with Applications using Mathematica®," Springer Books, Springer, number 978-0-8176-4586-1, January.
    2. Liu, Xiaoli & Xiao, Dongmei, 2007. "Complex dynamic behaviors of a discrete-time predator–prey system," Chaos, Solitons & Fractals, Elsevier, vol. 32(1), pages 80-94.
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