Incomplete block factorization preconditiong for indefinite elliptic problems
type: Item
instance of: scholarly article
title: Incomplete block factorization preconditiong for indefinite elliptic problems
zbMATH Open document ID: 0941.65034
author: Chun-Hua Guo
published in: Numerische Mathematik
publication date: 2000-08-07T00:00:00Z
review text: Using the finite difference method to solve an indefinite elliptic problem results in a linear system whose coefficient matrix is block tridiaginal and symmetric indefinite. The author shows that specific incomplete block factorization exists for this indefinite matrix if the mesh size is reasonably small, and this factorization can be used as an efficient preconditioner. The eigenvalues of the preconditioned matrix are estimated. Numerical results are also presented.
reviewed by: F. Szidarovszky
Mathematics Subject Classification ID: 65F10
Mathematics Subject Classification ID: 65F35
Mathematics Subject Classification ID: 65N06
Mathematics Subject Classification ID: 35J25
zbMATH DE Number: 1398756
zbMATH Keywords: incomplete block factorization preconditioning
zbMATH Keywords: numerical results
zbMATH Keywords: finite difference method
zbMATH Keywords: indefinite elliptic problem
MaRDI profile type: Publication
full work available at URL: s002119900076
OpenAlex ID: W2023354375
DOI: 10.1007/S002119900076
description: scientific article; zbMATH DE number 1398756