International Conference on Applied Mathematics, Modeling and Computational Science (AMMCS), Waterloo, Kanada, 25 - 29 Temmuz 2011, cilt.1368
Several areas of applications, such as model order reduction, preconditioner design, and eigenvalue problems for spectral projectors can be found in the literature. In this paper, a fast and sparsity preserving approach for computing the spectral projectors is proposed. The suggested approach can be used in both Newton iteration and integral representation based methods. A comparison of the original and the suggested approaches in terms of computation time, sparsity preservation and accuracy is presented in this paper.