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- W1973709085 abstract "Mixed finite element formulations give rise to large, sparse, block linear systems of equations, the solution of which is often sought via a preconditioned iterative technique. In this work we present a general analysis of block-preconditioners based on the stability conditions inherited from the formulation of the finite element method (the Babuska--Brezzi, or inf-sup, conditions). The analysis is motivated by the notions of norm-equivalence and field-of-values-equivalence of matrices. In particular, we give sufficient conditions for diagonal and triangular block-preconditioners to be norm- and field-of-values-equivalent to the system matrix." @default.
- W1973709085 created "2016-06-24" @default.
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- W1973709085 date "2004-01-01" @default.
- W1973709085 modified "2023-10-17" @default.
- W1973709085 title "Analysis of Preconditioners for Saddle-Point Problems" @default.
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- W1973709085 doi "https://doi.org/10.1137/s1064827502418203" @default.
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