Results 71 to 80 of about 896 (158)

The Disjoint Domination Game [PDF]

open access: yes, 2014
We introduce and study a Maker-Breaker type game in which the issue is to create or avoid two disjoint dominating sets in graphs without isolated vertices.
Bujtás, Csilla, Tuza, Zsolt
core  

Approximation Algorithms for Connected Maximum Cut and Related Problems

open access: yes, 2015
An instance of the Connected Maximum Cut problem consists of an undirected graph G = (V, E) and the goal is to find a subset of vertices S $\subseteq$ V that maximizes the number of edges in the cut \delta(S) such that the induced graph G[S] is connected.
C. Chekuri   +11 more
core   +1 more source

On global location-domination in graphs [PDF]

open access: yes, 2013
A dominating set $S$ of a graph $G$ is called locating-dominating, LD-set for short, if every vertex $v$ not in $S$ is uniquely determined by the set of neighbors of $v$ belonging to $S$.
Hernando, C., Mora, M., Pelayo, I. M.
core   +1 more source

Signed domatic number of a graph

open access: yesDiscrete Applied Mathematics, 2005
Given a graph \(G=(V, E)\), the signed dominating function is a two-valued mapping \(f : V \rightarrow \{-1, 1\}\) such that, for each vertex \(v\in V\), \(\sum_{x\in N[v]} f(x) \geq 1\), where \(N[v]=N(v)\cup\{v\}\) is the closed neighborhood of \(v\).
Volkmann, Lutz, Zelinka, Bohdan
openaire   +2 more sources

Domination parameters with number 2: interrelations and algorithmic consequences

open access: yes, 2016
In this paper, we study the most basic domination invariants in graphs, in which number 2 is intrinsic part of their definitions. We classify them upon three criteria, two of which give the following previously studied invariants: the weak $2$-domination
Bonomo, Flavia   +4 more
core  

Restricted Strip Covering and the Sensor Cover Problem

open access: yes, 2006
Given a set of objects with durations (jobs) that cover a base region, can we schedule the jobs to maximize the duration the original region remains covered? We call this problem the sensor cover problem.
Buchsbaum, Adam L.   +4 more
core   +2 more sources

Deploying robots with two sensors in $K_{1,6}$-free graphs

open access: yes, 2014
Let $G$ be a graph of minimum degree at least two with no induced subgraph isomorphic to $K_{1,6}$. We prove that if $G$ is not isomorphic to one of eight exceptional graphs, then it is possible to assign two-element subsets of $\{1,2,3,4,5\}$ to the ...
Abbas, Waseem   +4 more
core  

Two-out degree equitable domination in graphs [PDF]

open access: yesTransactions on Combinatorics, 2013
An equitable domination has interesting application in the contextof social networks. In a network, nodes with nearly equal capacitymay interact with each other in a better way. In the societypersons with nearly equal status, tend to be friendly.
Ali Sahal, Veena Mathad
doaj  

Distance domatic numbers for grid graphs

open access: yes, 2019
We say that a vertex-coloring of a graph is a proper k-distance domatic coloring if for each color, every vertex is within distance k from a vertex receiving that color. The maximum number of colors for which such a coloring exists is called the k-distance domatic number of the graph.
Cameron, Alex, Yan, Jiasheng
openaire   +2 more sources

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