Zhao-Zheng Liang

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In this paper, the optimal iteration parameters of the symmetric successive overrelaxation (SSOR) method for a class of block two-by-two linear systems are obtained, which result in optimal convergence factor. An accelerated variant of the SSOR (ASSOR) method is presented, which significantly improves the convergence rate of the SSOR method. Furthermore, a(More)
In this paper, the generalized parameterized inexact Uzawa (GPIU) method is further investigated for solving singular nonsymmetric saddle-point problems. The semi-convergence conditions of this method are derived, which further develop the results obtained in the paper Zhang and Wang, Appl. Math. Comput. 219(9) 4225–4231 (2013). Furthermore, the theoretical(More)