Title
Colorful paths for 3-chromatic graphs
Abstract
In this paper, we prove that every 3-chromatic connected graph, except C7, admits a 3-vertex coloring in which every vertex is the beginning of a 3-chromatic path with 3 vertices. It is a special case of a conjecture due to S. Akbari, F. Khaghanpoor, and S. Moazzeni stating that every connected graph G other than C7 admits a χ(G)-coloring such that every vertex of G is the beginning of a colorful path (i.e. a path on χ(G) vertices containing a vertex of each color). We also provide some support for the conjecture in the case of 4-chromatic graphs.
Year
DOI
Venue
2017
10.1016/j.disc.2017.01.016
Discrete Mathematics
Keywords
Field
DocType
Vertex coloring,Colorful path,Rainbow coloring
Complete coloring,Discrete mathematics,Combinatorics,Fractional coloring,Induced path,Vertex (graph theory),Neighbourhood (graph theory),Cycle graph,Vertex separator,Robbins' theorem,Mathematics
Journal
Volume
Issue
ISSN
340
5
0012-365X
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Stéphane Bessy111719.68
Nicolas Bousquet26213.14