Results 21 to 30 of about 4,787 (279)

A statnet Tutorial [PDF]

open access: yesJournal of Statistical Software, 2007
The statnet suite of R packages contains a wide range of functionality for the statistical analysis of social networks, including the implementation of exponential-family random graph (ERG) models. In this paper we illustrate some of the functionality of
Steven M. Goodreau   +4 more
doaj   +1 more source

C-m-SUPERMAGIC LABELING OF FRIENDSHIP GRAPHS [PDF]

open access: yes, 2021
The friendship graph Fmn is obtained by joining n copies of the cycle graph Cm with a common vertex. In this work, we investigate the Cm-supermagic labeling of friendship graphs.
Öner, Tarkan
openaire   +2 more sources

Modular Coloring and Switching in Some Planar Graphs

open access: yesRatio Mathematica, 2023
For a connected graph G, let c: V (G) →ℤk (k ≥ 2) be a vertex coloring of G. The color sum \sigma(v) of a vertex v of G is defined as the sum in ℤk of the colors of the vertices in N (v) that is (v) = \sum_{u\inN(v)}{c(u)} (mod k).
G. R Sanma, P Maya
doaj   +1 more source

A study on determination of some graphs by Laplacian and signless Laplacian permanental polynomials

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
The permanent of an n × n matrix [Formula: see text] is defined as [Formula: see text] where the sum is taken over all permutations σ of [Formula: see text] The permanental polynomial of M, denoted by [Formula: see text] is [Formula: see text] where In ...
Aqib Khan   +2 more
doaj   +1 more source

The total irregularity strength of m copies of the friendship graph [PDF]

open access: yes, 2022
This paper deals with the totally irregular total labeling of the disjoin union of friendship graphs. The results shows that the disjoin union of  copies of the friendship graph is a totally irregular total graph with the exact values of the total ...
Harmanus Batkunde   +3 more
core   +2 more sources

On Antimagic Labeling for Some Families of Graphs

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2023
Antimagic labeling of a graph  with  vertices and  edges is assigned the labels for its edges by some integers from the set , such that no two edges received the same label, and the weights of vertices of a graph  are pairwise distinct.
Noor K. Shawkat, Mohammed A. Ahmed
doaj   +1 more source

A Unique Characterization of Spectral Extrema for Friendship Graphs

open access: yesThe Electronic Journal of Combinatorics, 2022
Turán-type problem is one of central problems in extremal graph theory. Erdős et al. [J. Combin. Theory Ser. B 64 (1995) 89-100] obtained the exact Turán number of the friendship graph $F_k$ for $n\geq 50k^2$, and characterized all its extremal graphs. Cioabă et al. [Electron. J. Combin.
Mingqing Zhai, Ruifang Liu, Jie Xue 0004
openaire   +1 more source

On the local metric dimension of a lollipop graph, a web graph, and a friendship graph

open access: yesJournal of Physics: Conference Series, 2017
A N Cahyabudi, T A Kusmayadi
exaly   +2 more sources

The Maximum Spectral Radius of Graphs Without Friendship Subgraphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2020
A graph on $2k+1$ vertices consisting of $k$ triangles which intersect in exactly one common vertex is called a $k-$friendship graph and denoted by $F_k$. This paper determines the graphs of order $n$  that have the maximum (adjacency) spectral radius among all graphs containing no $F_k$, for $n$ sufficiently large.
Sebastian M. Cioaba   +3 more
openaire   +2 more sources

Results on Relatively Prime Domination Number of Vertex Switching of Some Graphs

open access: yesRatio Mathematica, 2023
If a set S ⊆ V has at least two members and every pair of vertices u and v is such that (d(u), d(v)) = 1, then it is said to be a relatively prime dominating set.
A Jancy Vini, C Jayasekaran
doaj   +1 more source

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