An approximate inverse preconditioner for spatial fractional diffusion equations with piecewise continuous coefficients

DOI10.1080/00207160.2019.1579313OpenAlexW2913654015WikidataQ128444689 ScholiaQ128444689MaRDI QIDQ5030546

Hui-Qin Wei, Zhi-Wei Fang, Hai-Wei Sun

Publication date: 17 February 2022

Published in: International Journal of Computer Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1080/00207160.2019.1579313

zbMATH Keywords

fast Fourier transformToeplitz matrixcirculant matrixKrylov subspace methodspiecewise continuous coefficientsapproximate inversefractional diffusion equation

Mathematics Subject Classification ID

Finite difference methods for initial value and initial-boundary value problems involving PDEs (65M06) PDEs with low regular coefficients and/or low regular data (35R05) Iterative numerical methods for linear systems (65F10) Preconditioners for iterative methods (65F08) Numerical analysis (65-XX)

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