摘要
根据广义对角占优矩阵实用判定中存在的困难,通过对矩阵行标进行划分,利用矩阵自身元素间的关系,得到一组判定条件,避免了利用α对角占优矩阵给出判定条件此类方法中关于α的讨论,改进了相关结果,进一步丰富了广义对角占优矩阵判定的理论,最后通过数值例子验证结果的有效性.
In order to overcome the difficult of some methods for generalized diagonally dominant matrices in practice, a new set of practical discriminating method is present by the partition of the row indices. The proposed methods determined the matrix directly make use of the relationship between the matrix elements, which avoided the discussion ofin some similar reference. Finally, a numerical example is given to demonstrate the utility of the given methods.
出处
《云南大学学报(自然科学版)》
CAS
CSCD
北大核心
2014年第5期637-641,共5页
Journal of Yunnan University(Natural Sciences Edition)
基金
黑龙江省教育厅科技项目(12513002)
关键词
对角占优
广义对角占优
α对角占优
diagonally dominant
generalized diagonal dominant
diagonally dominant
作者简介
许洁(1980-),女,吉林人,讲师,主要从事矩阵代数方面的研究.E—mail:aqie990132@126.com
通信作者:孙玉祥(1948-),男,吉林人,教授,硕士生导师,主要从事矩阵代数方面的研究.