Analysis of an algebraic Petrov-Galerkin smoothed aggregation multigrid method
The authors establish a convergence estimate for a Petrov-Galerkin algebraic multigrid method, in which the prolongations are defined using the concept of smoothed aggregation and the restrictions are simple aggregation operators. It is done by showing that these methods can be interpreted as Ritz-Galerkin methods using modified transfer and smoothing operators.
Petrov-Galerkin algebraic multigrid method
scientific article; zbMATH DE number 5366005