The paper, starting with seeking the basis relative to Jordan form matrix, in virtue of theory of chareteristic Values, discussed the method of finding the Jordan canonical matrix J = P-1AP of matrix A and invertible matrix p.

• 本文从寻求对应若当形矩阵的基底出发,利用有关特征值的理论给出了求矩阵A的若当标准形J=P~(-1)AP及可逆矩阵P的方法。