Wiktionary英語版

出典:Wiktionary

crown graph

名詞

crown graph (複数形 crown graphs)

  1. (graph theory) An undirected graph with 2n vertices in the two sets { u1, u2, ..., un } and { v1, v2, ..., vn } and with an edge from ui to vj whenever ij.
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ウィキペディア英語版

出典:Wikipedia

Crown graph

出典:『Wikipedia』 (2011/01/17 00:04 UTC 版)

英語による解説

ウィキペディア英語版からの引用
引用

In graph theory, a branch of mathematics, a crown graph on 2n vertices is an undirected graph with two sets of vertices ui and vi and with an edge from ui to vj whenever ij. The crown graph can be viewed as a complete bipartite graph from which the edges of a perfect matching have been removed, as the bipartite double cover of a complete graph, or as a bipartite Kneser graph Hn,1 representing the 1-item and (n − 1)-item subsets of an n-item set, with an edge between two subsets whenever one is contained in the other.

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