Inverse matrices for pseudospectral differentiation operators in polar coordinates by stepwise integrations and low-rank updates
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DOI: 10.1016/j.apnum.2019.10.016
Abstract: Abstract Spectral/pseudospectral integration preconditioning matrices are useful tools for solving differential equations involving pure differential operators d m / d x m . In this study we construct well-conditioned inverse pseudospectral matrices for the basic… read more here.
Keywords: rank updates; inverse matrices; integrations low; polar coordinates ... See more keywords
Inverse H-matrices
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DOI: 10.1016/j.laa.2019.02.019
Abstract: Abstract The notion of inverse M-matrices has been quite well studied and many of their properties have been documented in the literature. In this article, a proposal to consider the larger class of inverse H-matrices,… read more here.
Keywords: inverse matrices; matrices inverse;