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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2024 MCQ for Mathematics of Computation is 1.78.

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QQMR: A structure preserving quaternion quasi-minimal residual method
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by Tao Li and Qing-Wen Wang;
Math. Comp.
DOI: https://doi.org/10.1090/mcom/4074
Published electronically: February 10, 2025

Abstract:

The quaternion biconjugate gradient (QBiCG) method, as a novel variant of quaternion Lanczos-type methods for solving the non-Hermitian quaternion linear systems, does not yield a minimization property. This means that the method possesses a rather irregular convergence behavior, which leads to numerical instability. In this paper, we propose a new structure-preserving quaternion quasi-minimal residual method based on the quaternion biconjugate orthonormalization procedure with coupled two-term recurrences, which overcomes the drawback of QBiCG. The computational cost and storage required by the proposed method are much less than the traditional QMR iterations for the real representation of quaternion linear systems. The convergence properties of which are also established. Finally, we report the numerical results to show the robustness and effectiveness of the proposed method compared with QBiCG.
References
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Bibliographic Information
  • Tao Li
  • Affiliation: School of Mathematics and Statistics, Hainan University, Haikou 570228, People’s Republic of China
  • ORCID: 0000-0001-6144-4826
  • Email: tli@hainanu.edu.cn
  • Qing-Wen Wang
  • Affiliation: Department of Mathematics, Shanghai University, Shanghai 200444, People’s Republic of China; Newtouch Center for Mathematics, Shanghai University, Shanghai 200444, People’s Republic of China; and Collaborative Innovation Center for the Marine Artificial Intelligence, Shanghai University, Shanghai 200444, People’s Republic of China
  • MR Author ID: 364372
  • ORCID: 0000-0003-0189-5355
  • Email: wqw@t.shu.edu.cn
  • Received by editor(s): April 5, 2024
  • Received by editor(s) in revised form: August 9, 2024, and December 11, 2024
  • Published electronically: February 10, 2025
  • Additional Notes: This work was funded by the National Natural Science Foundation of China [grant numbers 12371023, 12401493, and 12401019], Hainan Provincial Natural Science Foundation of China [grant numbers 122QN214 and 122MS001], and the Academic Programs project of Hainan University [grant number KYQD(ZR)-21119].
    The second author is the corresponding author.
  • © Copyright 2025 American Mathematical Society
  • Journal: Math. Comp.
  • MSC (2020): Primary 15B33, 65F08, 65F10, 94A08
  • DOI: https://doi.org/10.1090/mcom/4074