Axelsson, O.; Karátson, J. Superlinear convergence of the GMRES for PDE-constrained optimization problems. (English) Zbl 1392.49035 Numer. Funct. Anal. Optim. 39, No. 9, 921-936 (2018). MSC: 49M25 49K20 PDFBibTeX XMLCite \textit{O. Axelsson} and \textit{J. Karátson}, Numer. Funct. Anal. Optim. 39, No. 9, 921--936 (2018; Zbl 1392.49035) Full Text: DOI
Karátson, J. Superlinear PCG algorithms: Symmetric part preconditioning and boundary conditions. (English) Zbl 1145.65034 Numer. Funct. Anal. Optim. 29, No. 5-6, 590-611 (2008). MSC: 65J10 47A50 35J25 65N30 65F10 65F35 65N12 PDFBibTeX XMLCite \textit{J. Karátson}, Numer. Funct. Anal. Optim. 29, No. 5--6, 590--611 (2008; Zbl 1145.65034) Full Text: DOI
Karátson, J. On the superlinear convergence rate of the preconditioned CGM for some nonsymmetric elliptic problems. (English) Zbl 1140.65076 Numer. Funct. Anal. Optim. 28, No. 9-10, 1153-1164 (2007). Reviewer: Constantin Popa (Constanţa) MSC: 65N12 65F10 65N15 35J25 65N06 65F35 PDFBibTeX XMLCite \textit{J. Karátson}, Numer. Funct. Anal. Optim. 28, No. 9--10, 1153--1164 (2007; Zbl 1140.65076) Full Text: DOI
Axelsson, O.; Karátson, J. Symmetric part preconditioning of the CG method for Stokes type saddle-point systems. (English) Zbl 1140.65023 Numer. Funct. Anal. Optim. 28, No. 9-10, 1027-1049 (2007). Reviewer: Constantin Popa (Constanţa) MSC: 65F10 65N15 35J25 65N30 74B05 74S05 76D07 76M10 PDFBibTeX XMLCite \textit{O. Axelsson} and \textit{J. Karátson}, Numer. Funct. Anal. Optim. 28, No. 9--10, 1027--1049 (2007; Zbl 1140.65023) Full Text: DOI
Axelsson, O.; Karátson, J. Symmetric part preconditioning for the conjugate gradient method in Hilbert space. (English) Zbl 1054.65055 Numer. Funct. Anal. Optimization 24, No. 5-6, 455-474 (2003). Reviewer: Karel Najzar (Praha) MSC: 65J10 47A50 PDFBibTeX XMLCite \textit{O. Axelsson} and \textit{J. Karátson}, Numer. Funct. Anal. Optim. 24, No. 5--6, 455--474 (2003; Zbl 1054.65055) Full Text: DOI
Axelsson, O.; Karátson, J. On the rate of convergence of the conjugate gradient method for linear operators in Hilbert space. (English) Zbl 1011.65026 Numer. Funct. Anal. Optimization 23, No. 3-4, 285-302 (2002). Reviewer: M.Thamban Nair (Chennai) MSC: 65J10 47A50 47F05 65N22 PDFBibTeX XMLCite \textit{O. Axelsson} and \textit{J. Karátson}, Numer. Funct. Anal. Optim. 23, No. 3--4, 285--302 (2002; Zbl 1011.65026) Full Text: DOI