On Schwarz-type Smoothers for Saddle Point Problems
✍ Scribed by Joachim Schöberl; Walter Zulehner
- Publisher
- Springer-Verlag
- Year
- 2003
- Tongue
- English
- Weight
- 207 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0029-599X
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📜 SIMILAR VOLUMES
Three domain decomposition methods for saddle point problems are introduced and compared. The first two are blockdiagonal and block-triangular preconditioners with diagonal blocks approximated by an overlapping Schwarz technique with positive definite local and coarse problems. The third is an overl
We investigate degenerate saddle point problems, which can be viewed as limit cases of standard mixed formulations of symmetric problems with large jumps in coefficients. We prove that they are well-posed in a standard norm despite the degeneracy. By wellposedness, we mean a stable dependence of the