Results 1 to 10 of about 1,592 (153)

Edge-Transitivity of Cayley Graphs Generated by Transpositions

open access: greenDiscussiones Mathematicae Graph Theory, 2016
Let S be a set of transpositions generating the symmetric group Sn (n ≥ 5). The transposition graph of S is defined to be the graph with vertex set {1, . . . , n}, and with vertices i and j being adjacent in T(S) whenever (i, j) ∈ S. In the present note,
Ganesan Ashwin
doaj   +5 more sources

ON A CLASS OF EDGE-TRANSITIVE DISTANCE-REGULAR ANTIPODAL COVERS OF COMPLETE GRAPHS [PDF]

open access: diamondUral Mathematical Journal, 2021
The paper is devoted to the problem of classification of edge-transitive distance-regular antipodal covers of complete graphs. This extends the classification of those covers that are arc-transitive, which has been settled except for some tricky cases ...
Ludmila Yu. Tsiovkina
doaj   +2 more sources

Normal edge-transitive and $ frac{1}{2}$-arc-transitive Cayley graphs on non-abelian groups of order $2pq$ , $p > q$ are primes [PDF]

open access: greenInternational Journal of Group Theory, 2016
Darafsheh and Assari in [Normal edge-transitive Cayley graphs onnon-abelian groups of order 4p, where p is a prime number,Sci. China Math. {bf 56} (1) (2013) 213$-$219.] classified the connected normal edge transitive and$frac{1}{2}-$arc-transitive ...
Ali Reza Ashrafi, Bijan Soleimani
doaj   +1 more source

Elementary abelian covers of the Wreath graph W (3, 2) and the Foster graph F26A

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
Arc-transitive and edge-transitive graphs are widely used in computer networks. Therefore, it is very useful to introduce and study the properties of these graphs.
Z. Chen   +5 more
doaj   +1 more source

On Semisymmetric Cubic Graphs of Order 20p2, p Prime

open access: yesDiscussiones Mathematicae Graph Theory, 2021
A simple graph is called semisymmetric if it is regular and edge-transitive but not vertex-transitive. Let p be an arbitrary prime. Folkman proved [Regular line-symmetric graphs, J. Combin. Theory 3 (1967) 215–232] that there is no semisymmetric graph of
Shahsavaran Mohsen   +1 more
doaj   +1 more source

A Combinatorial Approach to the Computation of the Fractional Edge Dimension of Graphs

open access: yesMathematics, 2021
E. Yi recently introduced the fractional edge dimension of graphs. It has many applications in different areas of computer science such as in sensor networking, intelligent systems, optimization, and robot navigation.
Nosheen Goshi   +3 more
doaj   +1 more source

On transitivity and connectedness of Cayley graphs of gyrogroups

open access: yesHeliyon, 2021
In this work, we explore edge direction, transitivity, and connectedness of Cayley graphs of gyrogroups. More specifically, we find conditions for a Cayley graph of a gyrogroup to be undirected, transitive, and connected.
Rasimate Maungchang   +3 more
doaj   +1 more source

Uniform edge betweenness centrality

open access: yesElectronic Journal of Graph Theory and Applications, 2020
The edge betweenness centrality of an edge is loosely defined as the fraction of shortest paths between all pairs of vertices passing through that edge. In this paper, we investigate graphs where the edge betweenness centrality of edges is uniform. It is
Heather Newman   +3 more
doaj   +1 more source

The edge-regular complete maps

open access: yesOpen Mathematics, 2020
A map is called edge-regular if it is edge-transitive but not arc-transitive. In this paper, we show that a complete graph Kn{K}_{n} has an orientable edge-regular embedding if and only if n=pd>3n={p}^{d}\gt 3 with p an odd prime such that pd≡3{p}^{d ...
Yu Xue, Lou Ben Gong
doaj   +1 more source

A Novel and Efficient Method for Computing the Resistance Distance

open access: yesIEEE Access, 2021
The resistance distance is an intrinsic metric on graphs that have been extensively studied by many physicists and mathematicians. The resistance distance between two vertices of a simple connected graph $G$ is equal to the resistance between two ...
Muhammad Shoaib Sardar   +3 more
doaj   +1 more source

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