F class generalized m - matrices include not only all m - matrices but also all positivematrices.
型广义m -矩阵不仅包括了M -矩阵，还包括了所有的正矩阵。
2
Some kinds of matrices are given, which belongs to the intersection of negatively stable matrices and totally principal positivematrices and can be used conveniently.
还给出了大批属于负稳定矩阵和完全主正阵交集的便于应用的矩阵类。
3
On the other hand, square roots of semi-positivematrices can be expressed by the symmetric expression of eigenvalues, if the eigenvalues of semi-matrices are difficult to compute.