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- W2508347811 abstract "The goal of this paper is to propose preconditioners for the system of linear equations that arises from a discretization of fourth order elliptic problems using spectral element methods. These preconditioners are constructed using separation of variables and can be diagonalized and hence easy to invert. For second order elliptic problems this technique has proven to be very successful and performs better than other preconditioners. We show that these preconditioners are spectrally equivalent to the quadratic forms by which we approximate them. Numerical result for the biharmonic problem are presented to validate the theoretical estimates." @default.
- W2508347811 created "2016-09-16" @default.
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- W2508347811 date "2016-08-30" @default.
- W2508347811 modified "2023-09-23" @default.
- W2508347811 title "Least-squares spectral element preconditioners for fourth order elliptic problems" @default.
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