Geodesic
Preconditioning of conjugate gradients by multigrid solver
Applications of Mathematics, Tome 39 (1994) no. 5, pp. 357-364.

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Solving a system of linear algebraic equations by the preconditioned conjugate gradient method requires to solve an auxiliary system of linear algebraic equations in each step. In this paper instead of solving the auxiliary system one iteration of the two level method for the original system is done.
DOI : 10.21136/AM.1994.134264
Classification : 65F10, 65F35
Keywords: conjugate gradient method; preconditioning; multigrid method 
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     title = {Preconditioning of conjugate gradients by multigrid solver},
     journal = {Applications of Mathematics},
     pages = {357--364},
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Křížková, Jitka; Vaněk, Petr. Preconditioning of conjugate gradients by multigrid solver. Applications of Mathematics, Tome 39 (1994) no. 5, pp. 357-364. doi : 10.21136/AM.1994.134264. http://geodesic.mathdoc.fr/articles/10.21136/AM.1994.134264/

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