Abstract
We analyze multiplicative Schwarz methods through the additive Schwarz theory. As a by-product we recover the Xu-Zikatanov identity for the norm of product operators. This extends earlier work by the author on multiplicative Schwarz methods that use symmetric positive definite solvers for the subspace corrections.
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Acknowledgements
This work is supported in part by the National Science Foundation under Grant No. DMS-16-20273. The author would also like to acknowledge the support provided by the Hausdorff Research Institute of Mathematics at Univeristät Bonn during her visit in Spring 2017.
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Brenner, S.C. (2018). An Additive Schwarz Analysis for Multiplicative Schwarz Methods: General Case. In: Bjørstad, P., et al. Domain Decomposition Methods in Science and Engineering XXIV . DD 2017. Lecture Notes in Computational Science and Engineering, vol 125. Springer, Cham. https://doi.org/10.1007/978-3-319-93873-8_2
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DOI: https://doi.org/10.1007/978-3-319-93873-8_2
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