Two block preconditioners for a class of double saddle point linear systems
Fariba Bakrani Balani, Masoud Hajarian, Luca Bergamaschi · Applied Numerical Mathematics · 2023
Two different block preconditioners are introduced and studied for solving a class of double saddle point linear systems. We provide an eigenvalue analysis for the preconditioned matrices, with special focus on their inexact variants, and give some numerical experiments to illustrate the performance of the studied preconditioning techniques.