Results 21 to 30 of about 1,516 (111)

On the Lovasz O-number of Almost Regular Graphs With Application to Erdos-Renyi Graphs [PDF]

open access: yes, 2006
AMS classifications: 05C69; 90C35; 90C22;
de Klerk, E.   +3 more
core   +2 more sources

(C3, C4, C5, C7)-Free Almost Well-Dominated Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2022
The domination gap of a graph G is defined as the di erence between the maximum and minimum cardinalities of a minimal dominating set in G. The term well-dominated graphs referring to the graphs with domination gap zero, was first introduced by Finbow et
Alizadeh Hadi   +2 more
doaj   +1 more source

Relating the super domination and 2-domination numbers in cactus graphs

open access: yesOpen Mathematics, 2023
A set D⊆V(G)D\subseteq V\left(G) is a super dominating set of a graph GG if for every vertex u∈V(G)\Du\in V\left(G)\setminus D, there exists a vertex v∈Dv\in D such that N(v)\D={u}N\left(v)\setminus D=\left\{u\right\}.
Cabrera-Martínez Abel   +1 more
doaj   +1 more source

Offensive alliances in cubic graphs [PDF]

open access: yes, 2006
An offensive alliance in a graph $\Gamma=(V,E)$ is a set of vertices $S\subset V$ where for every vertex $v$ in its boundary it holds that the majority of vertices in $v$'s closed neighborhood are in $S$.
Rodriguez, J. A., Sigarreta, J. M.
core   +3 more sources

(Independent) $k$-Rainbow Domination of a Graph

open access: yesTurkish journal of mathematics & computer science, 2020
Let G = (V, E) be a graph with the vertex set V = V(G) and the edge set E = E(G). Let k be a positive integer and γrk(G) (γirk (G)) be k-rainbow domination (independent k-rainbow domination) number of a graph G.
D. Mojdeh, Zhila Mansouri
semanticscholar   +1 more source

Hereditary Equality of Domination and Exponential Domination

open access: yesDiscussiones Mathematicae Graph Theory, 2018
We characterize a large subclass of the class of those graphs G for which the exponential domination number of H equals the domination number of H for every induced subgraph H of G.
Henning Michael A.   +2 more
doaj   +1 more source

On Generalized Sierpiński Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2017
In this paper we obtain closed formulae for several parameters of generalized Sierpiński graphs S(G, t) in terms of parameters of the base graph G. In particular, we focus on the chromatic, vertex cover, clique and domination numbers.
Rodríguez-Velázquez Juan Alberto   +2 more
doaj   +1 more source

Connected 𝐷 - Eccentric Domination in Graphs

open access: yesIndian Journal of Science and Technology
Objectives: To introduce connected -eccentric point set, connected -eccentric number, connected -eccentric dominating set, connected -eccentric domination number in a graph and related concepts. Methods: -distance in graphs are used to find the connected
A. Prasanna, N. Mohamedazarudeen
semanticscholar   +1 more source

A Note on the Locating-Total Domination in Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2017
In this paper we obtain a sharp (improved) lower bound on the locating-total domination number of a graph, and show that the decision problem for the locating-total domination is NP-complete.
Miller Mirka   +4 more
doaj   +1 more source

On the general position number of two classes of graphs

open access: yesOpen Mathematics, 2022
The general position problem is to find the cardinality of the largest vertex subset SS such that no triple of vertices of SS lies on a common geodesic.
Yao Yan, He Mengya, Ji Shengjin
doaj   +1 more source

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