English

Colorful Hamilton cycles in random graphs

Combinatorics 2024-02-07 v4

Abstract

Given an nn vertex graph whose edges have colored from one of rr colors C={c1,c2,,cr}C=\{c_1,c_2,\ldots,c_r\}, we define the Hamilton cycle color profile hcp(G)hcp(G) to be the set of vectors (m1,m2,,mr)[0,n]r(m_1,m_2,\ldots,m_r)\in [0,n]^r such that there exists a Hamilton cycle that is the concatenation of rr paths P1,P2,,PrP_1,P_2,\ldots,P_r, where PiP_i contains mim_i edges of color cic_i. We study hcp(Gn,p)hcp(G_{n,p}) when the edges are randomly colored. We discuss the profile close to the threshold for the existence of a Hamilton cycle and the threshold for when hcp(Gn,p)={(m1,m2,,mr)[0,n]r:m1+m2++mr=n}hcp(G_{n,p})=\{(m_1,m_2,\ldots,m_r)\in [0,n]^r: m_1+m_2+\cdots+m_r=n\}.

Keywords

Cite

@article{arxiv.2103.03916,
  title  = {Colorful Hamilton cycles in random graphs},
  author = {Debsoumya Chakraborti and Alan Frieze and Mihir Hasabnis},
  journal= {arXiv preprint arXiv:2103.03916},
  year   = {2024}
}

Comments

fixed minor typos

R2 v1 2026-06-23T23:49:14.114Z