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20142019
most citedOn Spectral Deformations and Singular Weyl Functions for One-Dimensional Dirac Operators

8 citations · 14 across the 4 of their papers we have counts for

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math.NA2019

Robust Preconditioners for Multiple Saddle Point Problems and Applications to Optimal Control Problems

Alexander Beigl, Jarle Sogn, Walter Zulehner

In this paper we consider multiple saddle point problems with block tridiagonal Hessian in a Hilbert space setting. Well-posedness and the related issue of preconditioning are disc…