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08/25/2022
Block preconditioners for the Marker and Cell discretization of the Stokes-Darcy equations
We develop block preconditioners for solving the Stokes-Darcy equations,...
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06/27/2022
Augmentation-Based Preconditioners for Saddle-Point Systems with Singular Leading Blocks
We consider the iterative solution of symmetric saddle-point matrices wi...
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05/30/2022
Eigenvalue Bounds for Saddle-Point Systems with Singular Leading Blocks
We derive bounds on the eigenvalues of saddle-point matrices with singul...
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11/04/2021
A note on using the mass matrix as a preconditioner for the Poisson equation
We show that the mass matrix derived from finite elements can be effecti...
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11/04/2021
A closed-form multigrid smoothing factor for an additive Vanka-type smoother applied to the Poisson equation
We consider an additive Vanka-type smoother for the Poisson equation dis...
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10/26/2021
Eigenvalue Bounds for Double Saddle-Point Systems
We derive bounds on the eigenvalues of a generic form of double saddle-p...
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09/27/2021