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where A(L(G)) is the adjacency matrix of the line graph of G, B(G) is the incidence matrix, and I<sub>m</sub> is the identity matrix of dimension m.
where A(L(G)) is the adjacency matrix of the line graph of G, B(G) is the incidence matrix, and I<sub>m</sub> is the identity matrix of dimension m.
其中''A''''L''(''G'')是''G''的线图的邻接矩阵，''B''(''G'')是关联矩阵，I<sub>m</sub> 是维数 m 的恒等矩阵。
其中''A''（''L''(''G'')）是''G''的线图的邻接矩阵，''B''(''G'')是关联矩阵，I<sub>m</sub> 是维数为m的恒等矩阵。