Application of modified homotopy perturbation method for solving the augmented systems
Journal of Computational and Applied Mathematics
A note on spectrum analysis of augmentation block preconditioned generalized saddle point matrices
Journal of Computational and Applied Mathematics
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We consider the use of a class of constraint preconditioners for the application of the Krylov subspace iterative method to the solution of large nonsymmetric, indefinite linear systems. The eigensolution distribution of the preconditioned matrix is determined and the convergence behavior of a Krylov subspace method such as GMRES is described. The choices of the parameter matrices and the implementation of the preconditioning step are discussed. Numerical experiments are presented.