Results 11 to 20 of about 1,521,521 (318)

Total Domination Multisubdivision Number of a Graph

open access: diamondDiscussiones Mathematicae Graph Theory, 2015
The domination multisubdivision number of a nonempty graph G was defined in [3] as the minimum positive integer k such that there exists an edge which must be subdivided k times to increase the domination number of G.
Avella-Alaminos Diana   +3 more
doaj   +5 more sources

Total and Double Total Domination Number on Hexagonal Grid [PDF]

open access: yesMathematics, 2019
In this paper, we determine the upper and lower bound for the total domination number and exact values and the upper bound for the double-total domination number on hexagonal grid H m , n with m hexagons in a row and n hexagons in a column ...
Antoaneta Klobučar, Ana Klobučar
doaj   +3 more sources

Results on the domination number and the total domination number of Lucas cubes

open access: diamondArs Mathematica Contemporanea, 2020
Lucas cubes are the special subgraphs of Fibonacci cubes. For small dimensions, their domination numbers are obtained by direct search or integer linear programming. For larger dimensions some bounds on these numbers are given.
Zülfükar Saygı
semanticscholar   +4 more sources

On the domination number and the total domination number of Fibonacci cubes

open access: diamondArs Mathematica Contemporanea, 2019
Fibonacci cubes are special subgraphs of the hypercube graphs. Their domination numbers and total domination numbers are obtained for some small dimensions by integer linear programming.
Elif Saygı
semanticscholar   +7 more sources

On Grundy Total Domination Number in Product Graphs

open access: diamondDiscussiones Mathematicae Graph Theory, 2021
A longest sequence (v1, . . ., vk) of vertices of a graph G is a Grundy total dominating sequence of G if for all i, N(υj)\∪j=1i-1N(υj)≠∅N({\upsilon _j})\backslash \bigcup\nolimits_{j = 1}^{i - 1} {N({\upsilon _j})} \ne \emptyset .
Brešar Boštjan   +8 more
doaj   +8 more sources

Double Total Domination Number on Some Chemical Nanotubes [PDF]

open access: diamondKragujevac Journal of Mathematics
Suppose G is a graph with the vertex set V (G). A set D ⊆ V (G) is a total k-dominating set if every vertex v ∈ V (G) has at least k neighbours in D. The total k-domination number γkt(G) is the size of the smallest total k-dominating set.
Ana Klobučar, Antoaneta Klobučar
semanticscholar   +4 more sources

Total $k$-rainbow domination subdivision number in graphs [PDF]

open access: greenComputer Science Journal of Moldova, 2020
A total $k$-rainbow dominating function (T$k$RDF) of $G$ is a function $f$ from the vertex set $V(G)$ to the set of all subsets of the set $\{1,\ldots,k\}$ such that (i) for any vertex $v\in V(G)$ with $f(v)=\emptyset$ the condition $\bigcup_{u \in N(v ...
Rana Khoeilar   +3 more
doaj   +3 more sources

Fair Total Domination Number in Cactus Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2021
For k ≥ 1, a k-fair total dominating set (or just kFTD-set) in a graph G is a total dominating set S such that |N(v) ∩ S| = k for every vertex v ∈ V\S. The k-fair total domination number of G, denoted by ftdk(G), is the minimum cardinality of a kFTD-set.
Hajian Majid, Rad Nader Jafari
doaj   +3 more sources

Properties of the Global Total k-Domination Number [PDF]

open access: goldMathematics, 2021
A nonempty subset D⊂V of vertices of a graph G=(V,E) is a dominating set if every vertex of this graph is adjacent to at least one vertex from this set except the vertices which belong to this set itself.
Frank A. Hernández Mira   +3 more
doaj   +2 more sources

Graphs with Total Domination Number Double of the Matching Number

open access: yesJournal of New Theory
A subset $S$ of vertices of a graph $G$ with no isolated vertex is called a total dominating set of $G$ if each vertex of $G$ has at least one neighbor in the set $S$.
Selim Bahadır
doaj   +2 more sources

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