Preprint
Oct 2026
Two-level additive Schwarz preconditioners with GDSW coarse spaces for high-order discretizations in 2D
Two-level overlapping Schwarz preconditioners with Generalized Dryja-Smith-Widlund (GDSW) and Reduced GDSW (RGDSW) coarse spaces for high-order finite element methods (FEM) and virtual element methods (VEM) are investigated and applied to the Poisson problem in 2D. The GDSW coarse space is a well-established robust cho...
Tommaso Bevilacqua, A. Klawonn, M. Lanser et al.
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