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most citedDouble Saddle-Point Preconditioning for Krylov Methods in the Inexact Sequential Homotopy Method

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Eigenvalue bounds for preconditioned symmetric multiple saddle-point matrices with block-triangular preconditioners

Luca Bergamaschi, Michele Bergamaschi, John W. Pearson

We develop eigenvalue bounds for symmetric, block-tridiagonal multiple saddle-point linear systems, preconditioned with block-triangular matrices, based on approximate Schur comple…