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Symbolic Methods for the Element Preconditioning Technique

  • Ulrich Langer
  • Stefan Reitzinger
  • Josef Schicho
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2630)

Abstract

The method of element preconditioning requires the construction of an M-matrix which is as close as possible to a given symmetric positive definite matrix in the spectral sense. In this paper we give a symbolic solution of the arising optimization problem for various subclasses. This improves the performance of the resulting algorithm considerably.

Keywords

Multigrid Method Symbolic Method Sequential Quadratic Programming Algorithm Positive Linear Combination Cylindrical Algebraic Decomposition 
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 Berlin Heidelberg 2003

Authors and Affiliations

  • Ulrich Langer
    • 1
  • Stefan Reitzinger
    • 1
  • Josef Schicho
    • 2
  1. 1.Institute of Computational MathematicsUniversity of LinzAustria
  2. 2.Research Institute of Symbolic ComputationUniversity of LinzAustria

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