How to determine the isomorphism of graphs is a difficult problem of graph theory, which has not been completely solved so far.
图同构的判定性问题是图论理论中的一个难题，至今没有得到彻底解决。
One helpful way to determine the isomorphism of graphs is to use elementary operations on a graph adjacency matrix so as to transform one matrix into another.
判断图同构的一种有用的方法是对图的邻接矩阵进行初等变换，变成另一个图的邻接矩阵。
After all the eigenvalues have been considered, isomorphism will be determined and correspondence of vertices in isomorphic graphs can be ultimately identified.
通过逐一考查全体特征值，实现图同构的判定并确定同构图的顶点对应关系。
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