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A new preconditions for solving linear systems with symmetric Z-matrices
(2012-05)
There are many preconditioners for linear systems, for example, P = I + Smax developed by Kotakemori in [9] and its extension P˜ developed by Arenas & Yong in [1]. These preconditioners were built to speed up the convergence ...
A new preconditioner for solving linear systems with ill-conditioned Z-matrices
(2011-06)
The class of Z-matrices is the set of matrices whose off-diagonal entries are non positive. Solving a linear system of the form Ax = b is possible if the coefficient matrix A has certain characteristics such as being of ...