Title
On the rainbow connectivity of graphs: complexity and FPT algorithms
Abstract
For a graph G = (V, E) and a color set C, let f : E → C be an edge-coloring of G which is not necessarily proper. Then, the graph G edge-colored by f is rainbow connected if every two vertices of G has a path in which all edges are assigned distinct colors. Chakraborty et al. defined the problem of determining whether the graph colored by a given edge-coloring is rainbow connected. Chen et al. introduced the vertex-coloring version of the problem as a variant, and we introduce the total-coloring version in this paper. We settle the precise computational complexities of all the three problems from two viewpoints, namely, graph diameters and certain graph classes. We also give FPT algorithms for the three problems on general graphs when parameterized by the number of colors in C; these results imply that all the three problems can be solved in polynomial time for any graph with n vertices if |C| = O(log n).
Year
DOI
Venue
2013
10.1007/978-3-642-22685-4_8
Algorithmica
Keywords
DocType
Volume
Cactus,Fixed parameter tractability,Outerplanar graph,Rainbow coloring,Series-parallel graph
Journal
67
Issue
ISSN
Citations 
2
0178-4617
6
PageRank 
References 
Authors
0.56
10
5
Name
Order
Citations
PageRank
Kei Uchizawa17412.89
Takanori Aoki260.90
Takehiro Ito326040.71
Akira Suzuki4518.44
Xiao Zhou532543.69