三矩阵左半张量积的(T,S,2)-逆的反序律

以矩阵的秩为工具,研究了三个矩阵左半张量积的(T,S,2)-逆的反序律,给出了三矩阵左半张量积(ABC)(2)T4,S4=(C(2)T3,S3It)(B(2)T2,S2Ip)AT1(2),S1成立的充要条件.     

ON SOLUTIONS OF QUATERNION MATRIX EQUATIONS XF-AX=BY AND XF-A=BY

In this paper,the quaternion matrix equations XF-AX=BY and XF-A=BY are investigated.For convenience,they were called generalized Sylvesterquaternion matrix equation and generalized Sylvester-j-conjugate quaternion matrix equation,which include the Sylvester matrix equation and Lyapunov matrix equation as special cases.By applying of Kronecker map and complex representation of a quaternion matrix,the sufficient conditions to compute the solution can be given and the expressions of the explicit solutions to the above two quaternion matrix equations XF-AX=BY and XF-A=BY are also obtained.By the established expressions,it is easy to compute the solution of the quaternion matrix equation in the above two forms.In addition,two practical algorithms for these two quaternion matrix equations are give.One is complex representation matrix method and the other is a direct algorithm by the given expression.Furthermore,two illustrative examples are proposed to show the efficiency of the given method.     

矩阵右半张量积的秩及其相关不等式

给出了两个矩阵做右半张量积后矩阵的秩,并且讨论了相关的秩的不等式.     

矩阵右半张量积的加权Moore-Penrose逆的反序律

研究了矩阵右半张量积的加权Moore-Penrse逆的反序律,给出T(A☉B)+NP=(It⊕B+NP)A+NP成立的若干充要条件.     

换位矩阵在矩阵张量积交换中的应用

利用换位矩阵实现了多个矩阵做张量积任意个矩阵可交换,从而把两个矩阵做张量积交换后数值半径相等推广到多个矩阵.     

三矩阵左半张量积的加权Moore-Penrose

给出了三矩阵左半张量积A⊙B⊙C的加权Moore-Penrose逆满足反序律(A⊙B⊙C)⁺_MK=(C⁺_LK⊕I_t )(B⁺_NL⊕I_p)A⁺_MN 的充要条件。     

酉矩阵在矩阵张量积交换中的应用

利用酉矩阵实现了多个矩阵做张量积任意个矩阵可交换,从而把两个矩阵做张量积交换后数值半径相等推广到多个矩阵.     

三矩阵左半张量积的加权Moore-Penrose逆的反序律

给出了三矩阵左半张量积A⊙B⊙C的加权Moore-Penrose逆满足反序律（A⊙B⊙C）MK^＋=（CLK^＋×It）（BNL^＋×Ip）AMN^＋的充要条件。     

广义换位矩阵及其应用

给出了广义换位矩阵的定义,推导出其主要性质,然后讨论了同一高维数组按不同指标索引的排列之间的相互关系,最后给出广义换位矩阵在矩阵半张量积和张量场中的应用.     

矩阵左半张量积的(T,S,2)-逆的反序律

给出了矩阵半张量积的(T,S,2) 逆的反序律成立的充要条件。并证明了等式(A⊙B)⁺_MP=(A⁺_MN(A⊙B))⁺_NP((A⊙B)(B⁺_NPIp))⁺_MN。