Geodesic
A multilevel method with correction by aggregation for solving discrete elliptic problems
Applications of Mathematics, Tome 31 (1986) no. 5, pp. 365-378.

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The author studies the behaviour of a multi-level method that combines the Jacobi iterations and the correction by aggragation of unknowns. Our considerations are restricted to a simple one-dimensional example, which allows us to employ the technique of the Fourier analysis. Despite of this restriction we are able to demonstrate differences between the behaviour of the algorithm considered and of multigrid methods employing interpolation instead of aggregation.
DOI : 10.21136/AM.1986.104214
Classification : 35J25, 65F10, 65L10, 65L60, 65N22
Keywords: multilevel method; correction by aggregation; convergence acceleration; multigrid method; Jacobi relaxation; aggregation method; coarse grid correction 
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     author = {Blaheta, Radim},
     title = {A multilevel method with correction by aggregation for solving discrete elliptic problems},
     journal = {Applications of Mathematics},
     pages = {365--378},
     publisher = {mathdoc},
     volume = {31},
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     zbl = {0615.65103},
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     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1986.104214/}
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Blaheta, Radim. A multilevel method with correction by aggregation for solving discrete elliptic problems. Applications of Mathematics, Tome 31 (1986) no. 5, pp. 365-378. doi : 10.21136/AM.1986.104214. http://geodesic.mathdoc.fr/articles/10.21136/AM.1986.104214/

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