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Invertible smoothing preconditioners for linear discrete ill-posed problems. (English) Zbl 1072.65057
Summary: The solution of large linear discrete ill-posed problems by iterative methods has recently received considerable attention. This paper presents invertible smoothing preconditioners which are well suited for use with the GMRES, RRGMRES and LSQR methods.

65F22 Ill-posedness and regularization problems in numerical linear algebra
65F35 Numerical computation of matrix norms, conditioning, scaling
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