Abstract
In this paper we present new efficient variants of substructuring preconditioners for algebraic linear systems arising from the mortar discretization of a degenerate parabolic system of equations. The new approaches extend and adapt the idea of substructuring preconditioners to the discretization of a degenerate problem in electrocardiology. A polylogarithmic bound for the condition number of the preconditioned matrix is proved and validated by numerical experiments.
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Pennacchio, M., Simoncini, V. Substructuring Preconditioners for Mortar Discretization of a Degenerate Evolution Problem. J Sci Comput 36, 391–419 (2008). https://doi.org/10.1007/s10915-008-9195-7
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DOI: https://doi.org/10.1007/s10915-008-9195-7