A tighter Erd\"os-P\'osa function for long cycles
Combinatorics
2012-05-07 v1 Discrete Mathematics
Abstract
We prove that there exists a bivariate function f with f(k,l) = O(l k log k) such that for every naturals k and l, every graph G has at least k vertex-disjoint cycles of length at least l or a set of at most f(k,l) vertices that meets all cycles of length at least l. This improves a result by Birmel\'e, Bondy and Reed (Combinatorica, 2007), who proved the same result with f(k,l) = \Theta(l k^2).
Keywords
Cite
@article{arxiv.1205.0940,
title = {A tighter Erd\"os-P\'osa function for long cycles},
author = {Samuel Fiorini and Audrey Herinckx},
journal= {arXiv preprint arXiv:1205.0940},
year = {2012}
}
Comments
4 pages