Novel analytical and numerical techniques for fractional temporal SEIR measles model

In this paper, a fractional temporal SEIR measles model is considered. The model consists of four coupled time fractional ordinary differential equations. The time-fractional derivative is defined in the Caputo sense. Firstly, we solve this model by solving an approximate model that linearizes the f...

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Bibliographic Details
Published in:Numerical algorithms 2018-09, Vol.79 (1), p.19-40
Main Authors: Abdullah, F. A., Liu, F., Burrage, P., Burrage, K., Li, T.
Format: Article
Language:English
Subjects:
Algebra
Algorithms
Computer Science
Differential equations
Error analysis
Error correction
Exact solutions
Mathematical models
Measles
Numeric Computing
Numerical Analysis
Ordinary differential equations
Original Paper
Predictor-corrector methods
Theory of Computation
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Summary:In this paper, a fractional temporal SEIR measles model is considered. The model consists of four coupled time fractional ordinary differential equations. The time-fractional derivative is defined in the Caputo sense. Firstly, we solve this model by solving an approximate model that linearizes the four time fractional ordinary differential equations (TFODE) at each time step. Secondly, we derive an analytical solution of the single TFODE. Then, we can obtain analytical solutions of the four coupled TFODE at each time step, respectively. Thirdly, a computationally effective fractional Predictor-Corrector method (FPCM) is proposed for simulating the single TFODE. And the error analysis for the fractional predictor-corrector method is also given. It can be shown that the fractional model provides an interesting technique to describe measles spreading dynamics. We conclude that the analytical and Predictor-Corrector schemes derived are easy to implement and can be extended to other fractional models. Fourthly, for demonstrating the accuracy of analytical solution for fractional decoupled measles model, we applied GMMP Scheme (Gorenflo-Mainardi-Moretti-Paradisi) to the original fractional equations. The comparison of the numerical simulations indicates that the solution of the decoupled and linearized system is close enough to the solution of the original system. And it also indicates that the linearizing technique is correct and effective.
ISSN:1017-1398
1572-9265
DOI:10.1007/s11075-017-0426-6