Results 1 to 10 of about 681,927 (350)

On the {2}-domination number of graphs

open access: yesAIMS Mathematics, 2022
Let $ G $ be a nontrivial graph and $ k\geq 1 $ an integer. Given a vector of nonnegative integers $ w = (w_0, \ldots, w_k) $, a function $ f: V(G)\rightarrow \{0, \ldots, k\} $ is a $ w $-dominating function on $ G $ if $ f(N(v))\geq w_i $ for every $ v\
Abel Cabrera-Martínez   +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

Algorithmic domination in the gig economy

open access: yesEuropean Journal of Political Theory, 2022
Digital platforms and application software have changed how people work in a range of industries. Empirical studies of the gig economy have raised concerns about new systems of algorithmic management exercised over workers and how these alter the ...
J. Muldoon, P. Raekstad
semanticscholar   +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

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

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

$k$-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

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

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

Vertices belonging to all or to no minimum locating dominating sets of trees [PDF]

open access: yesOpuscula Mathematica, 2009
A set \(D\) of vertices in a graph \(G\) is a locating-dominating set if for every two vertices \(u\), \(v\) of \(G \setminus D\) the sets \(N(u) \cap D\) and \(N(v) \cap D\) are non-empty and different.
Mostafa Blidia, Rahma Lounes
doaj   +1 more source

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