摘要
在一定条件下,研究了矩阵(A+I)^(-1)(A-I)与(A+I)(A-I)^(-1)的收敛性、正定性.分析了广义正定矩阵的一些特性,建立了判别广义正定矩阵的充要条件.给出了(A+I)(A-I)^(-1)属于广义正定矩阵的一个充分条件.
Under certain conditions, the convergence and positive definitiveness of matrix (A+I)^-1(A-I)and (A+I)(A-I)^-1 were studied. Some properties of the generalized positive definite matrix were analyzed, and the sufficient and necessary conditions for the discriminant generalized positive definite matrix were established. A sufficient condition that (A+I)(A-I)^-1 belongs to the generalized positive definite matrix was given.
出处
《兰州大学学报(自然科学版)》
CAS
CSCD
北大核心
2016年第3期385-389,共5页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(11401357)
陕西省青年科技新星项目(2016KJXX-95)
陕西理工大学科研计划项目(SLGKYQD2-14)
陕西省教育厅科研项目(16JK1150)
陕西省教育厅科研项目(16JK1150)
关键词
对称正定矩阵
广义正定矩阵
收敛矩阵
特征值
奇异值
symmetric positive definite matrix
generalized positive definite matrix
convergent matrix
eigenvalue
singular value