On the choice of preconditioner for minimum residual methods for non-Hermitian matrices
We consider the solution of left preconditioned linear systems P- 1Cx=P-1c, where P,CECn×n are non-Hermitian, cECn, and C, P, and P-1C are diagonalisable with spectra symmetric about the real line. We prove that, when P and C are self-adjoint with respect to the same Hermitian sesquilinear form, the...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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