Searching for authors named "Philippe Guillaume" – sorted by Relevance.
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Rational Approximation Preconditioners for General Sparse Linear Systems
- This paper presents a class of preconditioning techniques which exploit rational function approximations to the original matrix. The matrix is first shifted and then an incomplete LU factorization of the resulting matrix is computed. The resulting factors are then used to compute a better preconditi
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A New Class of Multivariate Padé Approximants
- A new class of multivariate Padé approximants is introduced. In the case of two variables x and y, the approach consists in applying the Padé approximation with respect to y to the coefficients of the Padé approximation with respect to x. This technique has a natural extension to n variables, and is
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Rational Approximation Preconditioners for General Sparse Linear Systems
- This paper presents a class of preconditioning techniques which exploit rational function approximations to the original matrix. The matrix is first shifted and then an incomplete LU factorization of the resulting matrix is computed. The resulting factors are then used to compute a better preconditi
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