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math.NA2016
A deflated Schur complement method for the iterative solution of a high-order discontinuous element discretization of the Poisson equation
Sumedh Joshi, Peter Diamessis
A combination of block-Jacobi and deflation preconditioning is used to solve a high-order discontinuous element-based collocation discretization of the Schur complement of the Pois…
math.NA2015★ 6 cited
Deflation-accelerated preconditioning of the Poisson-Neumann Schur problem on long domains with a high-order discontinuous element-based collocation method
Sumedh M. Joshi, Greg N. Thomsen, Peter J. Diamessis
A combination of block-Jacobi and deflation preconditioning is used to solve a high-order discontinuous collocation-based discretization of the Schur complement of the Poisson-Neum…