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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク graph energy ： ウィキペディア英語版 graph energy In mathematics, the energy of a graph is the sum of the absolute values of the eigenvalues of the adjacency matrix of the graph. This quantity is studied in the context of spectral graph theory. More precisely, let ''G'' be a graph with ''n'' vertices. It is assumed that ''G'' is simple, that is, it does not contain loops or parallel edges. Let ''A'' be the adjacency matrix of ''G'' and let $\backslash lambda\_i$, $i\; =\; 1\; ,\; \backslash ldots\; ,\; n$, be the eigenvalues of ''A''. Then the energy of the graph is defined as: :$E(G)\; =\; \backslash sum\_^n|\backslash lambda\_i|.$ == References == *. *. *. *. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「graph energy」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.