Results 61 to 70 of about 1,516 (111)

On the number of outer connected dominating sets of graphs

open access: yes, 2012
Let $G=(V,E)$ be a simple graph. A set $S\subseteq V(G)$ is called an outer-connected dominating set (or ocd-set) of $G$, if $S$ is a dominating set of $G$ and either $S=V(G)$ or $V\backslash S$ is a connected graph.
Akhbari, Mohammad H.   +2 more
core  

Symmetric Shannon capacity is the independence number minus 1

open access: yes, 2018
A symmetric variant of Shannon capacity is defined and computed.Comment: 4 pages, submitted to Electronic Journal of ...
Terpai, Tamás
core  

On Nordhaus-Gaddum type relations of δ-complement graphs. [PDF]

open access: yesHeliyon, 2023
Vichitkunakorn P   +2 more
europepmc   +1 more source

Power Domination in the Generalized Petersen Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2020
The problem of monitoring an electric power system by placing as few measurement devices in the system can be formulated as a power dominating set problem in graph theory.
Zhao Min, Shan Erfang, Kang Liying
doaj   +1 more source

Factor-Critical Property in 3-Dominating-Critical Graphs

open access: yes, 2006
A vertex subset $S$ of a graph $G$ is a dominating set if every vertex of $G$ either belongs to $S$ or is adjacent to a vertex of $S$. The cardinality of a smallest dominating set is called the dominating number of $G$ and is denoted by $\gamma(G)$.
Wang, Tao, Yu, Qinglin
core  

Domination Parameters of a Graph and its Complement

open access: yesDiscussiones Mathematicae Graph Theory, 2018
A dominating set in a graph G is a set S of vertices such that every vertex in V (G) \ S is adjacent to at least one vertex in S, and the domination number of G is the minimum cardinality of a dominating set of G.
Desormeaux Wyatt J.   +2 more
doaj   +1 more source

On Accurate Domination in Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2019
A dominating set of a graph G is a subset D ⊆ VG such that every vertex not in D is adjacent to at least one vertex in D. The cardinality of a smallest dominating set of G, denoted by γ(G), is the domination number of G. The accurate domination number of
Cyman Joanna   +2 more
doaj   +1 more source

A construction of small (q-1)-regular graphs of girth 8

open access: yes, 2015
In this note we construct a new infinite family of $(q-1)$-regular graphs of girth $8$ and order $2q(q-1)^2$ for all prime powers $q\ge 16$, which are the smallest known so far whenever $q-1$ is not a prime power or a prime power plus one itself.Comment:
Abreu, M.   +3 more
core  

Eternal Domination: Criticality and Reachability

open access: yesDiscussiones Mathematicae Graph Theory, 2017
We show that for every minimum eternal dominating set, D, of a graph G and every vertex v ∈ D, there is a sequence of attacks at the vertices of G which can be defended in such a way that an eternal dominating set not containing v is reached.
Klostermeyer William F.   +1 more
doaj   +1 more source

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