Corrigendum to Preconditioners for regularized saddle point problems with an application for heterogeneous Darcy flow problems

0468122 - ÚGN 2017 RIV NL eng J - Journal Article
Axelsson, Owe - Blaheta, Radim
Corrigendum to Preconditioners for regularized saddle point problems with an application for heterogeneous Darcy flow problems.
Journal of Computational and Applied Mathematics. Roč. 298, May 2016 (2016), s. 252-255. ISSN 0377-0427. E-ISSN 1879-1778
R&D Projects: GA MŠMT ED1.1.00/02.0070
Institutional support: RVO:68145535
Keywords : saddle point systems * conditions of nonsingularity * spectrum of preconditioned systems
Subject RIV: BA - General Mathematics
Impact factor: 1.357, year: 2016
http://www.sciencedirect.com/science/article/pii/S0377042715005889

After a recent publication of our paper (Axelsson et al., 2015), we found two incorrect/
incomplete statements in Section 2 of the paper. These statements do not have an
influence on the rest, i.e. the major part of the paper, but we feel that it is proper to publish
a corrigendum. The considered statements concern first the conditions of nonsingularity of
a nonsymmetric saddle point system, second the number of unit eigenvalues of a preconditioned
system. The correct statements are presented in this short communication.
Permanent Link: http://hdl.handle.net/11104/0265980