Properly colored subgraphs and rainbow subgraphs in edge-colorings with local constraints
Random Structures & Algorithms
Graph Theory With Applications
Graph Theory With Applications
Constrained Ramsey numbers of graphs
Journal of Graph Theory
Hi-index | 0.00 |
Let G = (V, E) be an edge-colored graph. A matching of G is called heterochromatic if its any two edges have different colors. Unlike uncolored matchings for which the maximum matching problem is solvable in polynomial time, the maximum heterochromatic matching problem is NP-complete. This means that to find both sufficient and necessary good conditions for the existence of perfect heterochromatic matchings should be not easy. In this paper, we obtain sufficient conditions of Hall-type and Tutte-type for the existence of perfect heterochromatic matchings in colored bipartite graphs and general colored graphs. We also obtain a sufficient and necessary condition of Berge-type to verify if a heterochromatic matching M of G is maximum.