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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

Some Results on the Strong Roman Domination Number of Graphs [PDF]

open access: yesMathematics Interdisciplinary Research, 2020
Let G=(V,E) be a finite and simple graph of order n and maximum‎ ‎degree Δ(G)‎. ‎A strong Roman dominating function on a‎ ‎graph  G  is a function  f‎:V (G)→{0‎, ‎1,… ,‎[Δ(G)/2 ]‎+ ‎1}  satisfying the condition that every‎ ‎vertex v for which  f(v)=0  is
Akram Mahmoodi   +2 more
doaj   +1 more source

Degree equitable restrained double domination in graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2021
A subset D ⊆ V(G) is called an equitable dominating set of a graph G if every vertex v ∈ V(G) \ D has a neighbor u ∈ D such that |dG(u)-dG(v)| ≤ 1. An equitable dominating set D is a degree equitable restrained double dominating set (DERD-dominating set)
Sunilkumar M Hosamani   +3 more
doaj   +1 more source

$k$-Efficient partitions of graphs [PDF]

open access: yesCommunications in Combinatorics and Optimization, 2019
A set $S = \{u_1,u_2, \ldots, u_t\}$ of vertices of $G$ is an efficient dominating set if every vertex of $G$ is dominated exactly once by the vertices of $S$.
M. Chellali   +2 more
doaj   +1 more source

Relatively Prime Inverse Domination On Line Graph

open access: yesRatio Mathematica, 2023
Let G be non-trivial graph. A subset D of the vertex set V (G) of a graph G is called a dominating set of G if every vertex in V − D is adjacent to a vertex in D.
C. Jayasekaran, Roshini L
doaj   +1 more source

Further Results on the Total Roman Domination in Graphs

open access: yesMathematics, 2020
Let G be a graph without isolated vertices. A function f : V ( G ) → { 0 , 1 , 2 } is a total Roman dominating function on G if every vertex v ∈ V ( G ) for which f ( v ) = 0 is adjacent to at least one vertex u ...
Abel Cabrera Martínez   +2 more
doaj   +1 more source

Homes as ‘cages of violence’ during the COVID-19 pandemic: A pastoral care approach to the case of Botswana

open access: yesHTS Teologiese Studies/Theological Studies, 2022
Violence has become a common phenomenon that affects women and children, particularly during the coronavirus disease 2019 (COVID-19) pandemic. While the lockdown regulations were meant to save lives by preventing further spread of the virus, another ...
Tshenolo J. Madigele, Gift T. Baloyi
doaj   +1 more source

EQUITABLE RINGS DOMINATION IN GRAPHS [PDF]

open access: yesJournal of Algebraic Systems
A dominating set $S$ of $G$ is an \textit{equitable dominating set} of $G$ if for every $v \in V(G) \setminus S$, there exists $u \in S$ such that $uv \in V(G)$ and $\displaystyle{\left|\deg(u) - \deg(v)\right| \leq 1.}$ A dominating set $S$ of $G$ is a \
Mark Caay
doaj   +1 more source

Hypo-efficient domination and hypo-unique domination

open access: yesCommunications in Combinatorics and Optimization, 2016
For a graph $G$ let $\gamma (G)$ be its domination number.‎ ‎We define a graph G to be‎ ‎(i) a hypo-efficient domination graph (or a hypo-$\mathcal{ED}$ graph)‎ ‎if $G$ has no efficient dominating set (EDS) but every graph formed‎ ‎ by ...
V‎. ‎Samodivkin
doaj   +1 more source

On -domination in graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let be a graph and let be a family of subsets of such that A dominating set of is called an -dominating set if for all The minimum cardinality of an -dominating of is called the -domination number of and is denoted by In this paper we present several ...
Manju Raju   +3 more
doaj   +1 more source

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