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• W4386417768 abstract "Proposing a matrix transform method to solve a fractional partial differential equation is the main aim of this paper. The main model can be transferred to a partial-integro differential equation (PIDE) with a weakly singular kernel. The spatial direction is approximated by a fourth-order difference scheme. Also, the temporal derivative is discretized via a second-order numerical procedure. First, the spatial derivatives are approximated by a fourth-order operator to compute the second-order derivatives. This process produces a system of differential equations related to the time variable. Then, the Crank–Nicolson idea is utilized to achieve a full-discrete scheme. The kernel of the integral term is discretized by using the Lagrange polynomials to overcome its singularity. Subsequently, we prove the convergence and stability of the new difference scheme by utilizing the Rayleigh–Ritz theorem. Finally, some numerical examples in one-dimensional and two-dimensional cases are presented to verify the theoretical results." @default.
• W4386417768 created "2023-09-05" @default.
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• W4386417768 date "2023-09-03" @default.
• W4386417768 modified "2023-09-27" @default.
• W4386417768 title "Fourth-Order Difference Scheme and a Matrix Transform Approach for Solving Fractional PDEs" @default.
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• W4386417768 doi "https://doi.org/10.3390/math11173786" @default.
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