设A(G)是简单图G的邻接矩阵,H是由G的独立边和不交圈组成的生成子图的集合,e是H中某个图的独立边,C是H中图的圈,且e∈E(C).记G—e是G的删边子图,G\W是从G中删去导出子图W中的顶点及其关联边后得到的图.那么A(G)的行列式为 detA(G)=detA(G-e)-detA(G\e)-2∑ c(-1)^|V(C)|detA(G/C) A(G)的积和式为 perA(G)=perA(G-e)+perA(G\e)+2∑ cperA(G\C) 这里,C取遍H中图的经过边e的圈.
Let A(G) be an adjacency matrix of simple undirected graph G, H is a set of spanning subgraph of G consisting of disjoint edges and cycles, e is a disjoint edge of some graph in H , C is cycle of graph in H ,and e ∈ E(C). G - e is the subgraph of G obtained by deleting the edge e, G / W is the subgraph of G obtained by deleting the vertices in W and all edges incident with them. Then the determinant of A(G) is detA(G)=detA(G-e)-detA(G/e)-2∑ c(-1)^|V(C)|detA(G/C) A(G) Thepermanent of A(G) is perA(G)=perA(G-e)+perA(G/e)+2∑ cperA(G/C) Where,C ranges over the cycles of pass through the edge e of graphs in H.