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New Recursive Approximations for Variable-Order Fractional Operators with Applications

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Date

2018

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Vilnius Gediminas Tech Univ

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Abstract

To broaden the range of applicability of variable-order fractional differential models, reliable numerical approaches are needed to solve the model equation. In this paper, we develop Laguerre spectral collocation methods for solving variable-order fractional initial value problems on the half line. Specifically, we derive three-term recurrence relations to efficiently calculate the variable-order fractional integrals and derivatives of the modified generalized Laguerre polynomials, which lead to the corresponding fractional differentiation matrices that will be used to construct the collocation methods. Comparison with other existing methods shows the superior accuracy of the proposed spectral collocation methods.

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Spectral Collocation Methods, Modified Generalized Laguerre Polynomials, Variable Order Fractional Integrals and Derivatives, Bagley-Torvik Equation

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Zaky, Mahmoud A...et al. (2018). "New Recursive Approximations for Variable-Order Fractional Operators with Applications", Mathematical Modelling and Analysis, Vol. 23, No. 2, pp. 227-239.

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Mathematical Modelling and Analysis

Volume

23

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2

Start Page

227

End Page

239