Results 31 to 40 of about 650 (167)

On the inverse graph of a finite group and its rainbow connection number

open access: yesElectronic Journal of Graph Theory and Applications, 2023
A rainbow path in an edge-colored graph G is a path that every two edges have different colors. The minimum number of colors needed to color the edges of G such that every two distinct vertices are connected by a rainbow path is called the rainbow ...
Rian Febrian Umbara   +2 more
doaj   +1 more source

The rainbow connection number of the enhanced power graph of a finite group

open access: yesElectronic Journal of Graph Theory and Applications, 2023
Let G be a finite group. The enhanced power graph ΓGe of G is the graph with vertex set G and two distinct vertices are adjacent if they generate a cyclic subgroup of G. In this article, we calculate the rainbow connection number of ΓGe.
Luis A. Dupont   +2 more
doaj   +1 more source

(1, 2)-rainbow connection number at most 3 in connected dense graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2023
Let G be an edge-coloured connected graph G. A path P in the graph G is called l-rainbow path if each subpath of length at most l + 1 is rainbow. The graph G is called (k, l)-rainbow connected if any two vertices in G are connected by at least k pairwise
Trung Duy Doan, Le Thi Duyen
doaj   +1 more source

On the Locating Rainbow Connection Number of Trees and Regular Bipartite Graphs [PDF]

open access: yes, 2023
Locating the rainbow connection number of graphs is a new mathematical concept that combines the concepts of the rainbow vertex coloring and the partition dimension.
Putri, Pritta E.   +7 more
core   +1 more source

Upper bounding rainbow connection number by forest number [PDF]

open access: yes, 2022
A path in an edge-colored graph is rainbow if no two edges of it are colored the same, and the graph is rainbow-connected if there is a rainbow path between each pair of its vertices.
Lauri, Juho   +3 more
core   +3 more sources

An updated survey on rainbow connections of graphs - a dynamic survey

open access: yesTheory and Applications of Graphs, 2017
The concept of rainbow connection was introduced by Chartrand, Johns, McKeon and Zhang in 2008. Nowadays it has become a new and active subject in graph theory. There is a book on this topic by Li and Sun in 2012, and a survey paper by Li, Shi and Sun in
Xueliang Li, Yuefang Sun
doaj   +1 more source

Distance-Local Rainbow Connection Number

open access: yes, 2022
Under an edge coloring (not necessarily proper), a rainbow path is a path whose edge colors are all distinct. The d-local rainbow connection number lrcd(G) (respectively, d-local strong rainbow connection number lsrcd(G)) is the smallest number of colors
Sugeng, Kiki A., Septyanto, Fendy
core   +1 more source

The rainbow connection problem: Mathematical formulations

open access: yes, 2016
The concept of rainbow connection was introduced by Chartrand et al. in 2008. The rainbow connection number, rc(G), of a connected graph G = (V, E) is the minimum number of colors needed to color the edges of E, so that each pair of the vertices in V is ...
Kutucu H., Nuriyeva F., Ugurlu O.
core   +4 more sources

Generalized Rainbow Connection of Graphs and their Complements

open access: yesDiscussiones Mathematicae Graph Theory, 2018
Let G be an edge-colored connected graph. A path P in G is called ℓ-rainbow if each subpath of length at most ℓ + 1 is rainbow. The graph G is called (k, ℓ)-rainbow connected if there is an edge-coloring such that every pair of distinct vertices of G is ...
Li Xueliang   +3 more
doaj   +1 more source

Rainbow connection number of generalized composition

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let be a connected graph with . The rainbow connection number is the smallest for which there is a map such that any two vertices can be connected by a path whose edge colors are all distinct.
Fendy Septyanto, Kiki Ariyanti Sugeng
doaj   +1 more source

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