A fast numerical algorithm based on the second kind Chebyshev polynomials for fractional integro-differential equations with weakly singular kernels

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS

卷:308

Article

Nemati, S.¹  Sedaghat, S.²  Mohammadi, I.³ 

[1] Univ Mazandaran, Fac Math Sci, Dept Math, Babol Sar, Iran

[2] Buein Zahra Tech Univ, Dept Math, Buein Zahra, Qazvin, Iran

[3] Islamic Azad Univ, Garmsar Branch, Dept Basic Sci, Garmsar, Iran

关键词: Fractional integro-differential equation;    Second kind Chebyshev polynomials;    Operational matrix;    Volterra integral equation;   

DOI  :  10.1016/j.cam.2016.06.012

来源: Elsevier

【 摘 要 】

A spectral method based on operational matrices of the second kind Chebyshev polynomials (SKCPs) is employed for solving fractional integro-differential equations with weakly singular kernels. Firstly, properties of shifted SKCPs, operational matrix of fractional integration and product operational matrix are introduced and then utilized to reduce the given equation to the solution of a system of linear algebraic equations. This new approach provides a significant computational advantage by converting the given original problem to an equivalent linear Volterra integral equation of the second kind with the same initial conditions. Approximate solution is achieved by expanding the functions in terms of SKCPs and employing operational matrices. Unknown coefficients are determined by solving final system of linear equations. An estimation of the error is given. Finally, illustrative examples are included to demonstrate the high precision, fast computation and good performance of the new scheme. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free