Results 41 to 50 of about 398,878 (275)

Computing locating-total domination number in some rotationally symmetric graphs

open access: yesScience Progress, 2021
Let G = ( V , E ) be a connected graph. A locating-total dominating set in a graph G is a total dominating set S of a G , for every pair of vertices i , j ∈ V ( G ) ∖ S , such that N ( i ) ∩ S ≠ N ( j ) ∩ S .
Hassan Raza   +3 more
doaj   +1 more source

Bounds on the Locating-Domination Number and Differentiating-Total Domination Number in Trees

open access: yesDiscussiones Mathematicae Graph Theory, 2018
A subset S of vertices in a graph G = (V,E) is a dominating set of G if every vertex in V − S has a neighbor in S, and is a total dominating set if every vertex in V has a neighbor in S.
Rad Nader Jafari, Rahbani Hadi
doaj   +1 more source

Disjunctive Total Domination in Graphs [PDF]

open access: yes, 2014
Let $G$ be a graph with no isolated vertex. In this paper, we study a parameter that is a relaxation of arguably the most important domination parameter, namely the total domination number, $\gamma_t(G)$.
Henning, Michael A., Naicker, Viroshan
core   +1 more source

Edge Dominating Sets and Vertex Covers

open access: yesDiscussiones Mathematicae Graph Theory, 2013
Bipartite graphs with equal edge domination number and maximum matching cardinality are characterized. These two parameters are used to develop bounds on the vertex cover and total vertex cover numbers of graphs and a resulting chain of vertex covering ...
Dutton Ronald, Klostermeyer William F.
doaj   +1 more source

Deterministic Sequencing of Exploration and Exploitation for Multi-Armed Bandit Problems [PDF]

open access: yes, 2013
In the Multi-Armed Bandit (MAB) problem, there is a given set of arms with unknown reward models. At each time, a player selects one arm to play, aiming to maximize the total expected reward over a horizon of length T.
Liu, Keqin, Vakili, Sattar, Zhao, Qing
core   +2 more sources

Partitioning a graph into a dominating set, a total dominating set, and something else [PDF]

open access: yesDiscussiones Mathematicae Graph Theory, 2010
A recent result of Henning and Southey (A note on graphs with disjoint dominating and total dominating set, {\it Ars Comb.} {\bf 89} (2008), 159--162) implies that every connected graph of minimum degree at least three has a dominating set $D$ and a total dominating set $T$ which are disjoint.
Michael .A. Henning   +2 more
openaire   +1 more source

Algorithmic complexity of secure connected domination in graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let be a simple, undirected, and connected graph. A connected (total) dominating set is a secure connected (total) dominating set of G, if for each there exists such that and is a connected (total) dominating set of G. The minimum cardinality of a secure
J. Pavan Kumar   +2 more
doaj   +1 more source

Certain Properties of Domination in Product Vague Graphs With an Application in Medicine

open access: yesFrontiers in Physics, 2021
The product vague graph (PVG) is one of the most significant issues in fuzzy graph theory, which has many applications in the medical sciences today.
Xiaolong Shi, Saeed Kosari
doaj   +1 more source

Location-domination in line graphs

open access: yes, 2016
A set $D$ of vertices of a graph $G$ is locating if every two distinct vertices outside $D$ have distinct neighbors in $D$; that is, for distinct vertices $u$ and $v$ outside $D$, $N(u) \cap D \neq N(v) \cap D$, where $N(u)$ denotes the open neighborhood
Foucaud, Florent, Henning, Michael A.
core   +3 more sources

Open k-monopolies in graphs: complexity and related concepts [PDF]

open access: yes, 2016
Closed monopolies in graphs have a quite long range of applications in several problems related to overcoming failures, since they frequently have some common approaches around the notion of majorities, for instance to consensus problems, diagnosis ...
Kuziak, Dorota   +2 more
core   +3 more sources

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