English

Counting odd cycles in locally dense graphs

Combinatorics 2016-04-26 v1

Abstract

We prove that for any given ε>0\varepsilon>0 and d[0,1]d\in [0,1], every sufficiently large (ε,d)(\varepsilon, d)-dense graph GG contains for each odd integer rr at least (drε)V(G)r(d^r-\varepsilon)|V(G)|^r cycles of length rr. Here, GG being (ε,d)(\varepsilon, d)-dense means that every set XX containing at least~εV(G)\varepsilon\,|V(G)| vertices spans at least d2X2\tfrac d2\, |X|^2 edges, and what we really count is the number of homomorphisms from an rr-cycle into GG. The result adresses a question of Y. Kohayakawa, B. Nagle, V. R\"odl, and M. Schacht.

Keywords

Cite

@article{arxiv.1604.06833,
  title  = {Counting odd cycles in locally dense graphs},
  author = {Christian Reiher},
  journal= {arXiv preprint arXiv:1604.06833},
  year   = {2016}
}
R2 v1 2026-06-22T13:39:03.808Z