1 citations · 1 across the 5 of their papers we have counts for
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Classification of Double Saddle-Point Systems
Susanne Bradley, Chen Greif
We offer a classification of a broad and practically relevant class of symmetric double saddle-point system. At the core of the paper is the division of the associated matrices int…
Augmentation-Based Preconditioners for Saddle-Point Systems with Singular Leading Blocks
Susanne Bradley, Chen Greif
We consider the iterative solution of symmetric saddle-point matrices with a singular leading block. We develop a new ideal positive definite block diagonal preconditioner that yie…
Eigenvalue Bounds for Saddle-Point Systems with Singular Leading Blocks
Susanne Bradley, Chen Greif
We derive bounds on the eigenvalues of saddle-point matrices with singular leading blocks. The technique of proof is based on augmentation. Our bounds depend on the principal angle…
Eigenvalue Bounds for Double Saddle-Point Systems
Susanne Bradley, Chen Greif
We derive bounds on the eigenvalues of a generic form of double saddle-point matrices. The bounds are expressed in terms of extremal eigenvalues and singular values of the associat…
Ideal Preconditioners for Saddle Point Systems with a Rank-Deficient Leading Block
Susanne Bradley
We consider the iterative solution of symmetric saddle point systems with a rank-deficient leading block. We develop two preconditioners that, under certain assumptions on the rank…