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- W4287372408 abstract "We provide an alternative Fourier analysis for multigrid applied to the Poisson problem in 1D, based on explicit derivation of spectra of the iteration matrix. The new Fourier analysis has advantages over the existing one. It is easy to understand and enables us to write the error equation in terms of the eigenvector of the stiffness matrix. When weighted-Jacobi is used as a smoother with two different weights, multigrid is an exact solver." @default.
- W4287372408 created "2022-07-25" @default.
- W4287372408 creator A5089569556 @default.
- W4287372408 date "2021-01-21" @default.
- W4287372408 modified "2023-10-17" @default.
- W4287372408 title "Multigrid as an exact solver" @default.
- W4287372408 doi "https://doi.org/10.48550/arxiv.2101.12005" @default.
- W4287372408 hasPublicationYear "2021" @default.
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