Perturbation analysis of generalized saddle point systems (Q854850)

The authors consider generalized saddle point systems of the form \(A u + B^T p = f, ~~B p = g\) and theoretically analyse the nonlinear perturbation upper bounds for it, derive the condition numbers and examine the sensivity of the computation of \(u\) and \(p\). Numerical experiments are presented for the 2D Oseen flow problem with Dirichlet boundary conditions.