Research Article

A Double-Parameter GPMHSS Method for a Class of Complex Symmetric Linear Systems from Helmholtz Equation

Table 4

The experimentally optimal parameters and the corresponding spectral radii for the iteration matrices of GPMHSS and DGPMHSS with and .

1050 80100

GPMHSS
1.11.52.21.7
0.5011 0.52350.57140.6372
DGPMHSS
1.11.52.21.8
1111
0.50050.50890.53100.5139