Divisible subdivisions
Combinatorics
2021-06-30 v3
Abstract
We prove that for every graph of maximum degree at most and for every positive integer there is a finite such that every -minor contains a subdivision of in which every edge is replaced by a path whose length is divisible by . For the case of cycles we show that for every -minor contains a cycle of length divisible by , and observe that this settles a recent problem of Friedman and the second author about cycles in (weakly) expanding graphs.
Keywords
Cite
@article{arxiv.2012.05112,
title = {Divisible subdivisions},
author = {Noga Alon and Michael Krivelevich},
journal= {arXiv preprint arXiv:2012.05112},
year = {2021}
}
Comments
Revised version, minor changes