Estimates of the elements of inverse matrices and pivotal condensation methods of incomplete block factorization
type: Item
instance of: scholarly article
title: Estimates of the elements of inverse matrices and pivotal condensation methods of incomplete block factorization
zbMATH Open document ID: 0789.65013
author: A. A. Terteryan
author: I. A. Blatov
published in: Computational Mathematics and Mathematical Physics
publication date: 1994-03-03T00:00:00Z
review text: Three modifications of incomplete block factorization for block tridiagonal matrices are considered. They are based on the block Gaussian elimination. First incomplete factorization is done, and then the solution is refined by some iterative procedure. In many cases the methods discussed are more efficient with respect to storage and time requirements than the usual block factorization.
Mathematics Subject Classification ID: 65F05
Mathematics Subject Classification ID: 65F10
Mathematics Subject Classification ID: 65N22
zbMATH DE Number: 486833
zbMATH Keywords: iterative refinement
zbMATH Keywords: pivotal condensation methods
zbMATH Keywords: incomplete block factorization
zbMATH Keywords: block tridiagonal matrices
zbMATH Keywords: block Gaussian elimination
reviewed by: Plamen Yalamov
MaRDI profile type: Publication
description: scientific article; zbMATH DE number 486833