Preprint
Aug 2026
Analysis of Block Jacobi/Gauss-Seidel and additive/multiplicative Schwarz preconditioning through the theory of GLT sequences, with applications to domain decomposition discretizations
It is proved that, if the BJ, BGS, and MS preconditioners are GLT sequences with symbol $\kappa$, then the sequences of the BJ, BGS, and MS preconditioners are GLT sequences with symbol $\kappa$.
C. Garoni, Abdessadek Rifqui, S. Serra-Capizzano
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