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A New Piecewise-Spectral Homotopy Analysis Method for Solving Chaotic Systems of Initial Value Problems

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  • H. Saberi Nik
  • Sohrab Effati
  • Sandile S. Motsa
  • Stanford Shateyi

Abstract

An accurate algorithm for solving initial value problems (IVPs) which are highly oscillatory is proposed. The proposed method is based on a novel technique of extending the standard spectral homotopy analysis method (SHAM) and adapting it to a sequence of multiple intervals. In this new application the method is referred to as the piecewise spectral homotopy analysis method (PSHAM). The applicability of the proposed method is examined on the differential equation system modeling HIV infection of CD4 + T cells and the Genesio-Tesi system which is known to be chaotic and highly oscillatory. Also, for the first time, we present here a convergence proof for SHAM. We treat in detail Legendre collocation and Chebyshev collocation. The method is compared to MATLAB’s ode45 inbuilt solver as a measure of accuracy and efficiency.

Suggested Citation

  • H. Saberi Nik & Sohrab Effati & Sandile S. Motsa & Stanford Shateyi, 2013. "A New Piecewise-Spectral Homotopy Analysis Method for Solving Chaotic Systems of Initial Value Problems," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-13, April.
    • Handle: RePEc:hin:jnlmpe:583193
    DOI: 10.1155/2013/583193
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    Cited by:

    1. Baghani, Omid, 2021. "Second Chebyshev wavelets (SCWs) method for solving finite-time fractional linear quadratic optimal control problems," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 190(C), pages 343-361.

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