A block lower triangular preconditioner for a class of complex symmetric system of linear equations

2016/11/11 by Davod Khojasteh Salkuyeh, Salkuyeh, Davod Khojasteh, Tahereh Salimi Siahkalaei +1
Computer Science · Engineering · Physics and Astronomy · #65F08 #65F10 #65F50 #Advanced Numerical Methods in Computational Mathematics #Electromagnetic Scattering and Analysis #FOS: Mathematics #Matrix Theory and Algorithms #Numerical Analysis (math.NA)

paper · pdf · doi:10.48550/arxiv.1611.03700

openalex publication_date 2016/11/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a block lower triangular (BLT) preconditioner to accelerate the convergence of nthe Krylov subspace iterative methods, such as generalized minimal residual (GMRES), for solving a broad class of complex symmetric system of linear equations. We analyze the eigenvalues distribution of preconditioned coefficient matrix. Numerical experiments are given to demonstrate the effectiveness of the BLT preconditioner.

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