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Since the development of the "SOR'' method by David Young , there has been a strong interest to use more than one parameter for SOR to improve the convergence , ,  and .
D. Young himself considered a two parametric method called "MSOR''. The two parameters weight the diagonal of positive-definite and consistently ordered 2-cyclic matrix , removing Young's hypothesis that the eigenvalues of Jacobi iteration matrix must all be real. We prove for certain cases that when "SOR'' diverges, the two parametric method converges.