关于矩阵若干相似不变量界限估计的改进

AN IMPROVEMENT ON THE BOUND FOR A NUMBER OF SIMILAR INVARIANTS OF A MATRIX

本文利用l(A),对参考文献[1]—[6]中关于矩阵A的特征方、展形、秩、行列式等的界限的若干估计式加以改进.当l(A)<l(A)时,改进后的估计式将更加精确.

In this paper,we have improved a number of results on the bound for the characteristic square, the spread, the rank and the determinant,e tc.of a matrix A. When l(A)<l(A), it is more precise.