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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 algebra ： ウィキペディア英語版 Graph algebra In mathematics, especially in the fields of universal algebra and graph theory, a graph algebra is a way of giving a directed graph an algebraic structure. It was introduced in , and has seen many uses in the field of universal algebra since then. == Definition == Let $D=(V,E)$ be a directed graph, and $0$ an element not in $V$. The graph algebra associated with $D$ is the set $V\; \backslash cup\; \backslash$ equipped with multiplication defined by the rules * $xy\; =\; x$ if $x,y\backslash in\; V,(x,y)\backslash in\; E$ * $xy\; =\; 0$ if $x,y\backslash in\; V\backslash cup\; \backslash ,(x,y)\backslash notin\; E$. 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 algebra」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.