Results 21 to 30 of about 2,737 (220)

Orientable -distance magic regular graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
Hefetz, Mütze, and Schwartz conjectured that every connected undirected graph admits an antimagic orientation (Hefetz et al., 2010). In this paper we support the analogous question for distance magic labeling. Let be an Abelian group of order .
Paweł Dyrlaga, Karolina Szopa
doaj   +1 more source

D-magic strongly regular graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
For a set of distances D, a graph G on n vertices is said to be D-magic if there exists a bijection and a constant k such that for any vertex x, where is the D-neighbourhood set of x.
Rinovia Simanjuntak, Palton Anuwiksa
doaj   +1 more source

A note on incomplete regular tournaments with handicap two of order n≡8(mod 16) [PDF]

open access: yesOpuscula Mathematica, 2017
A \(d\)-handicap distance antimagic labeling of a graph \(G=(V,E)\) with \(n\) vertices is a bijection \(f:V\to \{1,2,\ldots ,n\}\) with the property that \(f(x_i)=i\) and the sequence of weights \(w(x_1),w(x_2),\ldots,w(x_n)\) (where \(w(x_i)=\sum_{x_i
Dalibor Froncek
doaj   +1 more source

Distance magic labelings of hypercubes

open access: yesElectronic Notes in Discrete Mathematics, 2013
Abstract A distance magic labeling of a graph G is a bijective assignment of labels from {1, 2, …, |V (G)|} to the vertices of G such that the sum of labels on neighbors of u is the same for all vertices u. We show that the n-dimensional hypercube has a distance magic labeling for every n ≡ 2 ( mod 4 ) . It is known that this condition is
Petr Gregor, Petr Kovár
openaire   +1 more source

Spectra of graphs and closed distance magic labelings

open access: yesDiscrete Mathematics, 2016
Let $G=(V,E)$ be a graph of order $n$. A closed distance magic labeling of $G$ is a bijection $\ell \colon V(G)\rightarrow \{1,\ldots ,n\}$ for which there exists a positive integer $k$ such that $\sum_{x\in N[v]}\ell (x)=k$ for all $v\in V $, where $N[v]$ is the closed neighborhood of $v$.
Marcin Anholcer   +2 more
openaire   +2 more sources

Handicap Labelings of 4-Regular Graphs

open access: yesAdvances in Electrical and Electronic Engineering, 2017
Let G be a simple graph, let f : V(G)→{1,2,...,|V(G)|} be a bijective mapping. The weight of v ∈ V(G) is the sum of labels of all vertices adjacent to v. We say that f is a distance magic labeling of G if the weight of every vertex is the same
Petr Kovar   +3 more
doaj   +1 more source

Distance antimagic labelings of Cartesian product of graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let be a graph of order n. Let be a bijection. The weight w(v) of a vertex v with respect to the labeling f is defined by where N(v) is the open neighborhood of v. The labeling f is called a distance antimagic labeling if for any two distinct vertices v1,
Nancy Jaseintha Cutinho   +2 more
doaj   +1 more source

The Distance Magic Index of a Graph

open access: yesDiscussiones Mathematicae Graph Theory, 2018
Let G be a graph of order n and let S be a set of positive integers with |S| = n. Then G is said to be S-magic if there exists a bijection ϕ : V (G) → S satisfying ∑x∈N(u)ϕ(x) = k (a constant) for every u ∈ V (G). Let α(S) = max{s : s ∈ S}.
Godinho Aloysius   +2 more
doaj   +1 more source

Orientable Group Distance Magic Labeling of Directed Graphs

open access: yesMathematical Problems in Engineering, 2022
A directed graph G is said to have the orientable group distance magic labeling if there exists an abelian group ℋ and one-one map ...
Wasim Ashraf   +2 more
openaire   +1 more source

Distance Magic Labeling of Generalised Mycielskian Graphs

open access: yes, 2023
In this paper, we have studied the distance magic labelling of Generalised Mycielskian of a few families of graphs.
Pawar, Ravindra, Singh, Tarkehswar
openaire   +2 more sources

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