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On the Paired-Domination Subdivision Number of Trees [PDF]

open access: yesMathematics, 2021
A paired-dominating set of a graph G without isolated vertices is a dominating set of vertices whose induced subgraph has perfect matching. The minimum cardinality of a paired-dominating set of G is called the paired-domination number γpr(G) of G.
Shouliu Wei   +4 more
doaj   +2 more sources

The paired-domination and the upper paired-domination numbers of graphs [PDF]

open access: yesOpuscula Mathematica, 2015
In this paper we continue the study of paired-domination in graphs. A paired-dominating set, abbreviated PDS, of a graph \(G\) with no isolated vertex is a dominating set of vertices whose induced subgraph has a perfect matching.
Włodzimierz Ulatowski
doaj   +2 more sources

On the Paired-Domination Subdivision Number of a Graph [PDF]

open access: yesMathematics, 2021
In order to increase the paired-domination number of a graph G, the minimum number of edges that must be subdivided (where each edge in G can be subdivided no more than once) is called the paired-domination subdivision number sdγpr(G) of G.
Guoliang Hao   +4 more
doaj   +2 more sources

A Note on the Paired-Domination Subdivision Number of Trees [PDF]

open access: yesMathematics, 2021
For a graph G with no isolated vertex, let γpr(G) and sdγpr(G) denote the paired-domination and paired-domination subdivision numbers, respectively. In this note, we show that if T is a tree of order n≥4 different from a healthy spider (subdivided star),
Xiaoli Qiang   +5 more
doaj   +2 more sources

Block Graphs with Large Paired Domination Multisubdivision Number

open access: yesDiscussiones Mathematicae Graph Theory, 2021
The paired domination multisubdivision number of a nonempty graph G, denoted by msdpr(G), is the smallest positive integer k such that there exists an edge which must be subdivided k times to increase the paired domination number of G.
Mynhardt Christina M., Raczek Joanna
doaj   +2 more sources

All graphs with paired-domination number two less than their order [PDF]

open access: yesOpuscula Mathematica, 2013
Let \(G=(V,E)\) be a graph with no isolated vertices. A set \(S\subseteq V\) is a paired-dominating set of \(G\) if every vertex not in \(S\) is adjacent with some vertex in \(S\) and the subgraph induced by \(S\) contains a perfect matching.
Włodzimierz Ulatowski
doaj   +2 more sources

γ-paired dominating graphs of cycles [PDF]

open access: yesOpuscula Mathematica, 2022
A paired dominating set of a graph \(G\) is a dominating set whose induced subgraph contains a perfect matching. The paired domination number, denoted by \(\gamma_{pr}(G)\), is the minimum cardinality of a paired dominating set of \(G\).
Pannawat Eakawinrujee   +1 more
doaj   +1 more source

Upper paired domination versus upper domination [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2021
A paired dominating set $P$ is a dominating set with the additional property that $P$ has a perfect matching. While the maximum cardainality of a minimal dominating set in a graph $G$ is called the upper domination number of $G$, denoted by $\Gamma(G ...
Hadi Alizadeh, Didem Gözüpek
doaj   +1 more source

Paired domination versus domination and packing number in graphs

open access: yesJournal of Combinatorial Optimization, 2022
14 pages, 8 ...
Dettlaff, Magda   +2 more
openaire   +5 more sources

Unique Minimum Semipaired Dominating Sets in Trees

open access: yesDiscussiones Mathematicae Graph Theory, 2023
Let G be a graph with vertex set V. A subset S ⊆ 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 ...
Haynes Teresa W., Henning Michael A.
doaj   +1 more source

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