On the competition numbers of diamond-free graphs

On the competition numbers of diamond-free graphs
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关于无钻石图的竞争数

DOI:
10.1007/978-3-319-48532-4_22
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发表时间:
2016
期刊:
Lecture Notes in Computer Science
影响因子:
--
通讯作者:
Yoshio SANO
Yoshio SANO
中科院分区:
--
文献类型:
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作者:
Jihoon CHOI;Kyeong Seok KIM;Suh-Ryung KIM;Jung Yeun LEE;and Yoshio SANO;Yoshio SANO

文献摘要

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本文给出了无钻石图的竞争数定理的一个简短证明:如果图G是无钻石的,则图G的竞争数有界于,其中表示图G中的非单纯顶点集,表示覆盖一个顶点的所有邻域的团的最小数目。
In this note, we give a short proof for a theorem on the competition numbers of diamond-free graphs: If a graphGis diamond-free, then the competition number ofGis bounded above by, wheredenotes the set of non-simplicial vertices inGanddenotes the minimum number of cliques that cover all the neighbors of a vertexvinG.