Authors
Elad Aigner-Horev, Dan Hefetz
Publication date
2021
Journal
SIAM Journal on Discrete Mathematics
Volume
35
Issue
3
Pages
1569-1577
Publisher
Society for Industrial and Applied Mathematics
Description
Given an -vertex graph with minimum degree at least for some fixed , the distribution over the supergraphs of is referred to as a (random) perturbation of . We consider the distribution of edge-colored graphs arising from assigning each edge of the random perturbation a color, chosen independently and uniformly at random from a set of colors of size . We prove that edge-colored graphs which are generated in this manner asymptotically almost surely admit rainbow Hamilton cycles whenever the edge-density of the random perturbation satisfies for some fixed and . The number of colors used is clearly asymptotically best possible. In particular, this improves on a recent result of Anastos and Frieze [J. Graph Theory, 92 (2019), pp. 405--414] in this regard. As an intermediate result, which may be of independent interest, we prove that …
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