no fix definition
no fix in the second column means that we take the shift ζ in the left hand side of the correction equation equal to the Rayleigh quotient from the beginning. For the results of column 3 through 6 we fix the target in the left hand side of the correction equation until r < 0.01. As can be seen from the second and third column, and as already has been suggested in Experiment 10.2, a “fix” gives better results than “no fix”. Except for column 5, all correction equations are solved by 10 steps of unpreconditioned GMRES.