Generalized Refinement of Gauss-Seidel Method for Consistently Ordered 2-Cyclic Matrices

Table 3

Comparison of J, GS, SOR, and GRGS methods.

Methods	Number of iterations	Spectral radius	Rate of convergence
J	18	0.7071	0.1505
GS	11	0.5	0.3010
SOR	8	0.1716	0.7655
CG	5
BiCG	5
MINRES	19
RGS	6	0.25	0.6021
SRGS	4	0.125	0.9031
-RGS	3	0.0625	1.2041
-RGS	2	0.0313	1.5045
-RGS	2	0.0156	1.8069
-RGS	2	0.0078	2.1079
-RGS	2	0.0039	2.4089
-RGS	2	0.002	2.699
-RGS	2	0.001	3