par Notay, Yvan
Référence Linear algebra and its applications, 154-156, 583-599
Publication Publié, 1991
Article révisé par les pairs
Résumé : The paper is devoted to the conditioning analysis of modified block incomplete factorizations of a given Stieltjes matrix. We obtain new results, improve other theories, and compare all existing upper bounds through numerical experiments. Applied to discrete elliptic PDEs, our results show that an O(h-1) spectral bound can be achieved for a large class of problems. © 1991.