Eigenvalue bounds of the shift-splitting preconditioned singular nonsymmetric saddle-point matrices
Abstract For singular nonsymmetric saddle-point problems, a shift-splitting preconditioner was studied in (Appl.Math.Comput.269:947-955, 2015).To further show the efficiency of the shift-splitting Apron preconditioner, we provide eigenvalue bounds for the nonzero eigenvalues of the shift-splitting preconditioned singular nonsymmetric saddle-point m