Finding a perfect matching of $\mathbb{F}_2^n$ with prescribed differences
Combinatorics
2024-09-04 v2
Abstract
We consider the following question by Balister, Gy\H{o}ri and Schelp: given nonzero vectors in with zero sum, is it always possible to partition the elements of into pairs such that the difference between the two elements of the -th pair is equal to the -th given vector for every ? An analogous question in , which is a case of the so-called "seating couples" problem, has been resolved by Preissmann and Mischler in 2009. In this paper, we prove the conjecture in in the case when the number of distinct values among the given difference vectors is at most , and also in the case when at least a fraction of the given vectors are equal (for all and sufficiently large based on ).
Cite
@article{arxiv.2310.17433,
title = {Finding a perfect matching of $\mathbb{F}_2^n$ with prescribed differences},
author = {Benedek Kovács},
journal= {arXiv preprint arXiv:2310.17433},
year = {2024}
}
Comments
19 pages