Abstract The matrix direct product is generalized and two kinds of direct products are given by Wang Zhongde (1989). These two kinds of direct products are applied to the construction of orthogonal transforms. In this paper, Wang Zhongde s work is generalized further, and a kind of direct product of matrix block is given. It is also used to construct the orthogonal transforms.
Yan Chungang,Jiang Changjun. GENERALIZATION OF MATRIX DIRECT PRODUCT AND ITS APPLICATION TO THE CONSTRUCTION OF ORTHOGONAL TRANSFORMS[J]. , 1992, 14(1): 86-91 .