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Lower bounds for three-dimensional nonoverlapping domain decomposition algorithms

Numerische Mathematik, ISSN: 0029-599X, Vol: 93, Issue: 3, Page: 445-470
2003
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Article Description

Lower bounds for the condition numbers of the preconditioned systems are obtained for the wire basket preconditioner and the Neumann-Neumann preconditioner in three dimensions. They show that the known upper bounds are sharp.

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