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  • Sparsity Preserving Computation for Spectral Projectors 

    Authors:Yetkin, E. Fatih; Daǧ, Hasan
    Publisher and Date:(Amer Inst Physics, 2011)
    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 ...