Computing the Clique-width of Cactus Graphs

被引：1
|
作者：
Leonardo Gonzalez-Ruiz, J. [1 ]
Raymundo Marcial-Romero, J. [1 ]
Hernandez-Servin, J. A. [1 ]
机构：
[1] Univ Autonoma Estado Mexico, Fac Ingn, Toluca, Mexico
来源：
ELECTRONIC NOTES IN THEORETICAL COMPUTER SCIENCE | 2016年 / 328卷 / 328期
关键词：
Graph theory; Clique-width; Tree-width; Complexity;
D O I：
10.1016/j.entcs.2016.11.005
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
Similar to the tree-width (twd), the clique-width (cwd) is an invariant of graphs. A well known relationship between tree-width and clique-width is that cwd(G) <= 3. 2(twd(G)) (1. I)t is also known that tree-width of Cactus graphs is 2, therefore the clique-width for those graphs is smaller or equal than 6. In this paper, it is shown that the clique-width of Cactus graphs is smaller or equal to 4 and we present a polynomial time algorithm which computes exactly a 4-expression.
引用
收藏
页码：47 / 57
页数：11
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