Title
Graphs with large semipared domination number
Abstract
Let G be a graph with vertex set V and no isolated vertices. A subset S subset of V is a semipaired dominating set of G if every vertex in V \ S is adjacent to a vertex in S and S can be partitioned into two element subsets such that the vertices in each subset are at most distance two apart. The semipaired domination number gamma(pr2)(G) is the minimum cardinality of a semipaired dominating set of G. We show that if G is a connected graph G of order n >= 3, then gamma(pr2)(G) <= 2/3 n, and we characterize the extremal graphs achieving equality in the bound.
Year
DOI
Venue
2019
10.7151/dmgt.2143
DISCUSSIONES MATHEMATICAE GRAPH THEORY
Keywords
Field
DocType
paired-domination,semipaired domination
Discrete mathematics,Graph,Combinatorics,Domination analysis,Mathematics
Journal
Volume
Issue
ISSN
39
3
1234-3099
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Teresa W. Haynes177494.22
Michael A. Henning21865246.94