Journal
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
Volume 43, Issue 6, Pages 3392-3412Publisher
WILEY
DOI: 10.1002/mma.6128
Keywords
existence and uniqueness; finite difference scheme; iterative algorithm; nonlinear time-fractional integro-differential equation; stability and convergence
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Funding
- National Natural Science Foundation of China [11671131]
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In this paper, a finite difference scheme is proposed for solving the nonlinear time-fractional integro-differential equation. This model involves two nonlocal terms in time, ie, a Caputo time-fractional derivative and an integral term with memory. The existence of numerical solutions is shown by the Leray-Schauder theorem. And we obtain the discrete L-2 stability and convergence with second order in time and space by the discrete energy method. Then the uniqueness of numerical solutions is derived. Moreover, an iterative algorithm is designed for solving the derived nonlinear system. Numerical examples are presented to validate the theoretical findings and the efficiency of the proposed algorithm.
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