Intervenant: L. Reichel (Department of Mathematics, Kent State University, USA)
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Titre: Breakdown-free GMRES for Singular Systems
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Abstract: 
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GMRES is a popular iterative method for the solution of large
linear systems of equations with a square nonsingular matrix. When the matrix
is singular, GMRES may break down before an acceptable approximate solution
has been determined. We discuss properties of GMRES solutions at breakdown
and presents a modification of GMRES to overcome the breakdown.