摘要
运用Moore-Penrose逆的定义及其性质和投影的定义去研究投影PR(A)和PR(AB)的相互关系,得到若干结果 .研究表明:若矩阵A,B满足如下条件:(1)BB*=I,(2)B为酉矩阵,(3)B为非奇异阵,(4)A是列满秩,B是行满秩,则两者相等;若对于任意矩阵A,B时,两者之间存在若干重要关系式,从而进一步刻画了它们的相互关系.
This paper uses the definition and properties of Moore*Penrose inverse and the definition of projection to study the relationship bdtween the projection PR(A) and P(AB) ,and some results are obtained. Research shows that if the matrices A and B satisfy the following conditions : ( 1 ). BB ^* = I; (2). B is a unitary matrix; ( 3 ). B is a non-singular matrix; (4). A is full column rank and B is a full row rank, then they are equal. For any matrices A and B, there are several important relationships between the two. Thus the paper further describes the relationship between them.
出处
《西南民族大学学报(自然科学版)》
CAS
2015年第2期221-223,共3页
Journal of Southwest Minzu University(Natural Science Edition)
基金
国家自然科学基金(11161004)
广西自然科学基金(2013GXNSFAA019008)