Title
Rainbow matchings and Hamilton cycles in random graphs.
Abstract
Let HPn,m,k be drawn uniformly from all m-edge, k-uniform, k-partite hypergraphs where each part of the partition is a disjoint copy of [n]. We let HPn,m,k(kappa) be an edge colored version, where we color each edge randomly from one of kappa colors. We show that if kappa = n and m = Kn log n where K is sufficiently large then w.h.p. there is a rainbow colored perfect matching. I. e. a perfect matching in which every edge has a different color. We also show that if n is even and m = Kn log n where K is sufficiently large then w.h.p. there is a rainbow colored Hamilton cycle in G(n,m)((n)). Here G(n,m)((n)) denotes a random edge coloring of G(n, m) with n colors. When n is odd, our proof requires m =omega(n log n) for there to be a rainbow Hamilton cycle. (C) 2015 Wiley Periodicals, Inc.
Year
DOI
Venue
2016
10.1002/rsa.20594
RANDOM STRUCTURES & ALGORITHMS
Keywords
Field
DocType
random hypergraphs,perfect matchings,rainbow colorings,latin transversal
Discrete mathematics,Edge coloring,Combinatorics,Disjoint sets,Random graph,Hamiltonian path,Constraint graph,Matching (graph theory),Partition (number theory),Rainbow,Mathematics
Journal
Volume
Issue
ISSN
48.0
3.0
1042-9832
Citations 
PageRank 
References 
7
0.66
6
Authors
2
Name
Order
Citations
PageRank
Deepak Bal1357.32
Alan M. Frieze24837787.00