Block incomplete LU factorization for block-tridiagonal M-matrices

摘要

Here we propose a block ILU preconditioner for block-tridiagonal M-matrices, and some theoretical properties for the block ILU preconditioner are studied. Numerical results of the BICGSTAB using the block ILU and ILU(0) as the preconditioners are compared to see the effective of the block ILU preconditioners.