Comparison analysis for improving preconditioned SOR-type iterative method
H. Saberi Najafi, S. A. Edalatpanah · Numerical Analysis and Applications · 2013
On the basis of nonnegative matrices, some ( I + S )-type preconditioners based on the SOR method are studied. Moreover, we prove the monotonicity of spectral radii of iterative matrices with respect to the parameters in [12]. Also, some splittings and preconditioners are compared and derived by comparisons. A numerical example is given to illustrate our results.