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- W2033258523 abstract "We derive two preconditioners for the iterative solution of the linear system arising from Chebyshev approximation of a generalized Helmholtz problem. These preconditioners are constructed as full spectral approximations of a differential problem close in some sense to the original one. The analysis and numerical experiments show the efficiency of these iterative schemes and indicate that they appear as valuable alternative to the usual finite difference or finite element preconditionings." @default.
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- W2033258523 date "1990-06-01" @default.
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- W2033258523 title "Iterative methods with spectral preconditioning for elliptic equations" @default.
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- W2033258523 doi "https://doi.org/10.1016/0045-7825(90)90034-j" @default.
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