SEARCH

SEARCH BY CITATION

Keywords:

  • saddle Point problems;
  • iterative methods;
  • inexact constraint preconditioners;
  • eigenvalues

SUMMARY

This paper is devoted to the analysis of the eigenvalue distribution of two classes of block preconditioners for the generalized saddle point problem. Most of the bounds developed improve those appeared in previously published works. Numerical results onto a realistic test problem give evidence of the effectiveness of the estimates on the spectrum of preconditioned matrices. Copyright © 2011 John Wiley & Sons, Ltd.