Title: Accelerated preconditioner updates for solving shifted linear systems
Abstract: In this paper, we consider the problem of solving shifted linear systems (A+αI)x=b. Based on an LDU factorization of matrix A, we propose and analyse a technique to modify the LDU factorization of matrix A in order to obtain a preconditioner for matrix A+αI. We also discuss the properties of proposed preconditioner. Numerical experiments show the effectiveness of the proposed method.
Publication Year: 2016
Publication Date: 2016-05-10
Language: en
Type: article
Indexed In: ['crossref']
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