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Intestinal obstruction caused by early stage primary ileum adenocarcinoma: A case report and review of literature. [PDF]

open access: yesWorld J Gastrointest Oncol
Zhang XY   +7 more
europepmc   +1 more source

Degenerate Elliptic Eigenvalue Problems with Indefinite Weights

open access: yesDegenerate Elliptic Eigenvalue Problems with Indefinite Weights
openaire  

Weighted Matchings for Preconditioning Symmetric Indefinite Linear Systems

SIAM Journal on Scientific Computing, 2006
Maximum weight matchings have become an important tool for solving highly indefinite unsymmetric linear systems, especially in direct solvers. In this study we investigate the benefit of reorderings and scalings based on symmetrized maximum weight matchings as a preprocessing step for incomplete $\mathrm{LDL^T}$ factorizations.
Michael Hagemann, Olaf Schenk
openaire   +3 more sources

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