Abstract.
This paper reports a new spectral algorithm for obtaining an approximate solution for the Lévy-Feller diffusion equation depending on Legendre polynomials and Chebyshev collocation points. The Lévy-Feller diffusion equation is obtained from the standard diffusion equation by replacing the second-order space derivative with a Riesz-Feller derivative. A new formula expressing explicitly any fractional-order derivatives, in the sense of Riesz-Feller operator, of Legendre polynomials of any degree in terms of Jacobi polynomials is proved. Moreover, the Chebyshev-Legendre collocation method together with the implicit Euler method are used to reduce these types of differential equations to a system of algebraic equations which can be solved numerically. Numerical results with comparisons are given to confirm the reliability of the proposed method for the Lévy-Feller diffusion equation.
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Sweilam, N.H., Abou Hasan, M.M. Numerical approximation of Lévy-Feller fractional diffusion equation via Chebyshev-Legendre collocation method. Eur. Phys. J. Plus 131, 251 (2016). https://doi.org/10.1140/epjp/i2016-16251-y
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DOI: https://doi.org/10.1140/epjp/i2016-16251-y