Substructuring the Hiptmair-Xu preconditioner for positive Maxwell problems

06/22/2023

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by   R. Delville-Atchekzai, et al.

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Considering positive Maxwell problems, we propose a substructured version of the Hiptmair-Xu preconditioner based on a new formula that expresses the inverse of Schur systems in terms of the inverse matrix of the global volume problem.