Results 21 to 30 of about 2,114 (233)

γ-Paired dominating graphs of lollipop, umbrella and coconut graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2023
A paired dominating set of a graph G is a dominating set whose induced subgraph has a perfect matching. The paired domination number γpr(G) of G is the minimum cardinality of a paired dominating set. A paired dominating set D is a γpr(G)-set if |D|=γpr(G)
Pannawat Eakawinrujee   +1 more
doaj   +1 more source

Neighbourhood total domination in graphs [PDF]

open access: yesOpuscula Mathematica, 2011
Let \(G = (V,E)\) be a graph without isolated vertices. A dominating set \(S\) of \(G\) is called a neighbourhood total dominating set (ntd-set) if the induced subgraph \(\langle N(S)\rangle\) has no isolated vertices.
S. Arumugam, C. Sivagnanam
doaj   +1 more source

Paired-domination

open access: yesDiscussiones Mathematicae Graph Theory, 1998
It is known that a dominating set \(S\) of vertices of a graph \(G\) is a set such that every vertex of \(G\) is either in \(S\) or adjacent to at least one member of \(S\). A paired-dominating set is a dominating set whose induced subgraph contains at least one perfect matching.
Shannon L. Fitzpatrick, Bert L. Hartnell
openaire   +4 more sources

Block Graphs with Large Paired Domination Multisubdivision Number

open access: yesDiscussiones Mathematicae Graph Theory, 2021
The paired domination multisubdivision number of a nonempty graph G, denoted by msdpr(G), is the smallest positive integer k such that there exists an edge which must be subdivided k times to increase the paired domination number of G.
Mynhardt Christina M., Raczek Joanna
doaj   +1 more source

Complexity of Paired Domination in AT-free and Planar Graphs [PDF]

open access: yesSSRN Electronic Journal, 2022
For a graph $G=(V,E)$, a subset $D$ of vertex set $V$, is a dominating set of $G$ if every vertex not in $D$ is adjacent to atleast one vertex of $D$. A dominating set $D$ of a graph $G$ with no isolated vertices is called a paired dominating set (PD-set), if $G[D]$, the subgraph induced by $D$ in $G$ has a perfect matching. The Min-PD problem requires
Vikash Tripathi   +4 more
openaire   +5 more sources

A Novel Description of Some Concepts in Interval-Valued Intuitionistic Fuzzy Graph with an Application

open access: yesAdvances in Mathematical Physics, 2022
Covering, matching, and domination are the basic concepts in graphs that play a decisive role in the properties of graphs. Calculating these parameters is one of the difficulties in fuzzy graphs when it is not possible to accurately determine the values ...
Xiaoli Qiang   +5 more
doaj   +1 more source

Pair dominating graphs

open access: yesEuropean Journal of Combinatorics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Paul N. Balister, Béla Bollobás
openaire   +2 more sources

Total domination versus paired domination [PDF]

open access: yesDiscussiones Mathematicae Graph Theory, 2012
A dominating set of a graph G is a vertex subset that any vertex of G either belongs to or is adjacent to. A total dominating set is a dominating set whose induced subgraph does not contain isolated vertices. The minimal size of a total dominating set, the total domination number, is denoted by t.
openaire   +1 more source

Heritability and growth analysis of Brant`s oak (Quercus brantii Lindl.) based on sapling characteristics [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2018
Brant`s oak (Quercus brantii Lindl.) is one of the most important tree species of Zagros forests. The major objective of the study was to assess various populations of the species for identification of plus tree individuals and growth trend analysis of ...
Hossein Mirzaie-Nodoushan   +5 more
doaj   +1 more source

The architecture of differences

open access: yesTechne, 2021
Following in the footsteps of the protagonists of the Italian architectural debate is a mark of culture and proactivity. The synthesis deriving from the artistic-humanistic factors, combined with the technical-scientific component, comprises the very ...
Emilio Faroldi
doaj   +1 more source

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