matrix sum造句

the relationship between the rank of partitioned matrix and the one of submatrix is given with the partitioned matrix of the generalized inverse matrix, and the range of the rank of three matrices sum is obtained
摘要用分块矩阵的广义逆矩阵给出了分块矩阵的秩与子块秩的关系，及三个矩阵和的秩的范围。
It's difficult to find matrix sum in a sentence. 用matrix sum造句挺难的