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math.NA2023★ 2 cited
Some preconditioning techniques for a class of double saddle point problems
Fariba Balani Bakrani, Luca Bergamaschi, Angeles Martinez +1
In this paper, we describe and analyze the spectral properties of a number of exact block preconditioners for a class of double saddle point problems. Among all these, we consider…
math.NA2023
Parallel-in-Time Solver for the All-at-Once Runge--Kutta Discretization
Santolo Leveque, Luca Bergamaschi, Ángeles Martínez +1
In this article, we derive fast and robust parallel-in-time preconditioned iterative methods for the all-at-once linear systems arising upon discretization of time-dependent PDEs.…