Superior properties of the PRESB preconditioner for operators on two-by-two block form with square blocks
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DOI: 10.1007/s00211-020-01143-x
Abstract: Matrices or operators in two-by-two block form with square blocks arise in numerous important applications, such as in optimal control problems for PDEs. The problems are normally of very large scale so iterative solution methods… read more here.
Keywords: block; operators two; two two; preconditioner ... See more keywords