中心主子阵约束下矩阵方程AX=B的双对称解  

Solutions to AX=B for Bisymmetric Matrices under a Central Principal Submatrix Constraint

作　　者：赵丽君[1] 

机构地区：[1]台州学院数学与信息工程学院,浙江临海317000

出　　处：《台州学院学报》2014年第3期8-11,29,共5页Journal of Taizhou University

基　　金：国家自然科学基金委员会资助(11301107)

摘　　要：中心主子阵是指划去周边相同的行和列所得的主子阵。从中心主子阵扩充到双对称矩阵是有效和自然的一种矩阵扩充。通过分析双对称矩阵以及中心主子阵的结构,不仅给出了方程AX=B在中心主子阵约束下有双对称解的充分必要条件,而且给出了通解的表达式。在此基础上,也给出了最佳逼近问题的解的表达式。A central principal submatfix is a submatrix obtained by deleting the same number of rows and columns in edges of a matrix. This is a feasible and reasoned way to expand the submatrix to bisymmetric matrices. By means of the special structure of bisymmetric matrices and its central principal submatrix, this paper obtains not only necessary and sufficient conditions for the solvability of AX=B in bisymmetric matrices set under a central principal submatrix, but also the general representation of the solutions. Based on this, the expression of the solution for the corresponding optimal approximation problem is given.

关 键 词：双对称矩阵 中心主子阵 线性约束 

分 类 号：O241.6[理学—计算数学]