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Mansour Dana

Mansour Dana

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId: 14043156700
Faculty: Faculty of Science
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Research

Title
A Minimal Residual Method for a Special Class of Linear Systems with Normal Coefficients Matrices
Type
JournalPaper
Keywords
minimal residual method, system of linear algebraic equations, GMRES and MINRES methods.
Year
2005
Journal Computational Mathematics and Mathematical Physics
DOI
Researchers Mansour Dana ، A.G. Zykov ، Kh. D. Ikramov

Abstract

A minimal residual method is constructed for the class of linear systems with normal coefficient matrices whose spectra belong to algebraic curves of a low order k. From the well-known GMRES algorithm, the proposed method differs by the choice of the subspaces in which approximate solutions are sought; as a consequence, the latter method is described by a short-term recurrence. The case k=2 is discussed at length. Numerical results are presented that confirm the significant superiority of the proposed method over the GMRES as applied to the linear systems specified above