A. Sivas

activity

20192026

2 \times 2

block preconditioners for nonsymmetric problems

13 citations · 15 across the 3 of their papers we have counts for

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math.NA2020★ 2 cited

AIR algebraic multigrid for a space-time hybridizable discontinuous Galerkin discretization of advection(-diffusion)

Abdullah A. Sivas, Ben S. Southworth, Sander Rhebergen

This paper investigates the efficiency, robustness, and scalability of approximate ideal restriction (AIR) algebraic multigrid as a preconditioner in the all-at-once solution of a…

math.NA2019★ 13 cited

On fixed-point, Krylov, and $2 \times 2$ block preconditioners for nonsymmetric problems

Ben S. Southworth, Abdullah A. Sivas, Sander Rhebergen

The solution of matrices with $2 \times 2$ block structure arises in numerous areas of computational mathematics, such as PDE discretizations based on mixed-finite element methods,…

AIR algebraic multigrid for a space-time hybridizable discontinuous Galerkin discretization of advection(-diffusion)

On fixed-point, Krylov, and 2×2 block preconditioners for nonsymmetric problems

On fixed-point, Krylov, and $2 \times 2$ block preconditioners for nonsymmetric problems