@Article{JCM-24-539, author = {Zhong-zhi Bai, Jun-feng Yin and Yang-feng Su}, title = {A Shift-Splitting Preconditioner for Non-Hermitian Positive Definite Matrices}, journal = {Journal of Computational Mathematics}, year = {2006}, volume = {24}, number = {4}, pages = {539--552}, abstract = {

A shift splitting concept is introduced and, correspondingly, a shift-splitting iteration scheme and a shift-splitting preconditioner are presented, for solving the large sparse system of linear equations of which the coefficient matrix is an ill-conditioned non-Hermitian positive definite matrix. The convergence property of the shift-splitting iteration method and the eigenvalue distribution of the shift-splitting preconditioned matrix are discussed in depth, and the best possible choice of the shift is investigated in detail. Numerical computations show that the shift-splitting preconditioner can induce accurate, robust and effective preconditioned Krylov subspace iteration methods for solving the large sparse non-Hermitian positive definite systems of linear equations.

}, issn = {1991-7139}, doi = {https://doi.org/}, url = {http://global-sci.org/intro/article_detail/jcm/8773.html} }