一种改进的MINRES实现用于监控块系统残差子向量范数
A modified implementation of MINRES to monitor residual subvector norms for block systems
Technische Universität Chemnitz（捷克布杰约维采工业大学）；Johann Radon Institute for Computational and Applied Mathematics（约翰·拉德纳计算与应用数学研究所）
AI总结：
本文提出一种改进的MINRES实现，用于监控块系统中残差子向量的范数，相比经典方法节省存储并无需额外预处理。
摘要：
本文提出了一种改进的MINRES实现，用于监控块系统中残差子向量的范数，相比经典方法节省存储并无需额外预处理。
英文摘要：
Saddle-point systems, i.e., structured linear systems with symmetric matrices are considered. A modified implementation of (preconditioned) MINRES is derived which allows to monitor the norms of the subvectors individually. Compared to the implementation from the textbook of [Elman, Sylvester and Wathen, Oxford University Press, 2014], our method requires one extra vector of storage and no additional applications of the preconditioner. Numerical experiments are included.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
