A parameterized extended shift‐splitting preconditioner for nonsymmetric saddle point problems
Seryas Vakili, Ghodrat Ebadi, C. Vuik · Numerical Linear Algebra with Applications · 2022
Abstract In this article, a parameterized extended shift‐splitting (PESS) method and its induced preconditioner are given for solving nonsingular and nonsymmetric saddle point problems with nonsymmetric positive definite (1,1) part. The convergence analysis of the iteration method is discussed. The distribution of eigenvalues of the preconditioned matrix is provided. A number of experiments are given to verify the efficiency of the method for solving nonsymmetric saddle‐point problems.