Results 51 to 60 of about 13,369 (211)

On the Total Version of Triple Roman Domination in Graphs

open access: yesMathematics
In this paper, we describe the study of total triple Roman domination. Total triple Roman domination is an assignment of labels from {0,1,2,3,4} to the vertices of a graph such that every vertex is protected by at least three units either on itself or ...
Juan Carlos Valenzuela-Tripodoro   +3 more
doaj   +1 more source

On the Total Outer k-Independent Domination Number of Graphs

open access: yesMathematics, 2020
A set of vertices of a graph G is a total dominating set if every vertex of G is adjacent to at least one vertex in such a set. We say that a total dominating set D is a total outer k-independent dominating set of G if the maximum degree of the subgraph ...
Abel Cabrera-Martínez   +3 more
doaj   +1 more source

Total dominating sequences in graphs

open access: yesDiscrete Mathematics, 2016
A vertex in a graph totally dominates another vertex if they are adjacent. A sequence of vertices in a graph $G$ is called a total dominating sequence if every vertex $v$ in the sequence totally dominates at least one vertex that was not totally dominated by any vertex that precedes $v$ in the sequence, and at the end all vertices of $G$ are totally ...
Douglas F. Rall   +2 more
openaire   +3 more sources

On Total Domination in the Cartesian Product of Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2018
Ho proved in [A note on the total domination number, Util. Math. 77 (2008) 97–100] that the total domination number of the Cartesian product of any two graphs without isolated vertices is at least one half of the product of their total domination numbers.
Brešar Boštjan   +3 more
doaj   +1 more source

Total [1,2]-domination in Graphs

open access: yesActa Mathematicae Applicatae Sinica, English Series, 2018
17 ...
Baoyindureng Wu, Xuezheng Lv
openaire   +3 more sources

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

Total domination and total domination subdivision number of a graph and its complement

open access: yesDiscrete Mathematics, 2008
AbstractA set S of vertices of a graph G=(V,E) with no isolated vertex is a total dominating set if every vertex of V(G) is adjacent to some vertex in S. The total domination number γt(G) is the minimum cardinality of a total dominating set of G. The total domination subdivision number sdγt(G) is the minimum number of edges that must be subdivided in ...
Odile Favaron   +2 more
openaire   +2 more sources

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