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Browsing School of Science and Technology (2015-2019) by Subject "Iterative methods"

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Computing approximate (block) rational Krylov subspaces without explicit inversion with extensions to symmetric matrices

Mach, Thomas; Pranić, Miroslav S.; Vandebril, Raf (Electronic Transactions on Numerical Analysis, 2014)

It has been shown that approximate extended Krylov subspaces can be computed, under certain assumptions, without any explicit inversion or system solves. Instead, the vectors spanning the extended Krylov space are retrieved ...