首先获得了矩阵非奇异的一类条件,在此基础上,给出了一类矩阵特征值的Gerschgorin型包含域,最后给出了一个数值例子。
Firstly, a class of conditions of matrix being nonsingular is obtained, and equivalently, a class of Gerschgorin inclusion area of matrix is presented. At last, an example is given.