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A mosaic preconditioner for a dual Schur complement

  • E. Tyrtyshnikov
  • Y. Vassilevski
Conference paper

Summary

The paper is devoted to designing an interface preconditioner for a Schur complement associated with Lagrange multipliers. We exploit the fact that underc ertain topological restrictions the inverted Schur complement is spectrally equivalent to a dense matrix whose entries are known explicitly. The preconditioner is a low-rank mosaic approximation of the dense matrix which is easy to evaluate on a vector.

Keywords

Lagrange Multiplier Domain Decomposition Method Trace Normalization Topological Restriction Fast Multipole Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Italia 2003

Authors and Affiliations

  • E. Tyrtyshnikov
    • 1
  • Y. Vassilevski
    • 1
  1. 1.Institute of Numerical MathematicsMoscowRussia

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