Results 21 to 30 of about 41,065 (264)

Disjoint dominating and total dominating sets in graphs

open access: yesDiscrete Applied Mathematics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Henning, Michael A.   +3 more
openaire   +2 more sources

Total Dominating Sets and Total Domination Polynomials of Square Of Paths

open access: yesIOSR Journal of Mathematics, 2014
Let G= ( V , E ) be a simple connected graph. A set S V is a total dominating set of G if every vertex is adjacent to an element of S. Let Dt(Wn ,i) be the family of all total dominating sets of the graph Wn , n ≥ 3 with cardinality i, and let dt (Wn ,i) = │Dt (Wn 2 , i) │. In this paper we compute dt(Wn ,i),and obtain the polynomial Dt(Wn , x) = dt(Wn
T. Premala, C. Sekar
openaire   +1 more source

Secure total domination in chain graphs and cographs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let G = (V,E) be a graph without isolated vertices. A subset D of vertices of G is called a total dominating set of G if for every there exists a vertex such that A total dominating set D of a graph G is called a secure total dominating set of G if for ...
Anupriya Jha
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

A Novel Hybrid Algorithm for Minimum Total Dominating Set Problem

open access: yesMathematics, 2019
The minimum total dominating set (MTDS) problem is a variant of the classical dominating set problem. In this paper, we propose a hybrid evolutionary algorithm, which combines local search and genetic algorithm to solve MTDS.
Fuyu Yuan   +4 more
doaj   +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

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

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

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

A Note on Non-Dominating Set Partitions in Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2016
A set S of vertices of a graph G is a dominating set if every vertex not in S is adjacent to a vertex of S and is a total dominating set if every vertex of G is adjacent to a vertex of S.
Desormeaux Wyatt J.   +2 more
doaj   +1 more source

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