Abstract
This paper is concerned with the application of the spectral tau and collocation methods to delay multi-order fractional differential equations with vanishing delay \(rx\ (0<r<1)\). The fractional derivatives are described in the Caputo sense. The model solution is expanded in terms of Chebyshev polynomials. The convergence of the proposed approaches is investigated in the weighted \(L^2\)-norm. Numerical examples are provided to highlight the convergence rate and the flexibility of this approach. Our results confirm that nonlocal numerical methods are best suited to discretize fractional differential equations as they naturally take the global behavior of the solution into account.
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Acknowledgements
The authors would like to express special thanks to the referees for carefully reading, constructive comments and valuable remarks which significantly improved the quality of this paper. The authors extend their appreciation to Distinguished Scientist Fellowship Program (DSFP) at King Saud University (Saudi Arabia).
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Ezz-Eldien, S.S., Wang, Y., Abdelkawy, M.A. et al. Chebyshev spectral methods for multi-order fractional neutral pantograph equations. Nonlinear Dyn 100, 3785–3797 (2020). https://doi.org/10.1007/s11071-020-05728-x
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DOI: https://doi.org/10.1007/s11071-020-05728-x