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Discrete fractional diffusion equation

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Abstract

The tool of the discrete fractional calculus is introduced to discrete modeling of diffusion problem. A fractional time discretization diffusion model is presented in the Caputo-like delta’s sense. The numerical formula is given in form of the equivalent summation. Then, the diffusion concentration is discussed for various fractional difference orders. The discrete fractional model is a fractionization of the classical difference equation and can be more suitable to depict the random or discrete phenomena compared with fractional partial differential equations.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Grant No. 11301257), the Innovative Team Program of the Neijiang Normal University (Grant No. 13TD02), the Guangxi Natural Science Foundation (Grant No. 2013GXNSFBA019021), and the Scientific Research Foundation of GuangXi University (Grant No. XBZ120542).

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Correspondence to Dumitru Baleanu.

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Wu, GC., Baleanu, D., Zeng, SD. et al. Discrete fractional diffusion equation. Nonlinear Dyn 80, 281–286 (2015). https://doi.org/10.1007/s11071-014-1867-2

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  • DOI: https://doi.org/10.1007/s11071-014-1867-2

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