Some convergence results of PD relaxation methods

摘要

In the recent paper of Bai and Su a class of parallel decomposition-type accelerated overrelaxation (PDAOR) methods suitable to the SIMD-systems is established and convergence conditions are concluded when the coefficient matrices of the linear systems are L-matrices, H-matrices or symmetric positive-definite matrices. In the case of H-matrices we improve the convergence area for relaxation parameters.