English

Induced bisecting families for hypergraphs

Combinatorics 2017-01-13 v3

Abstract

Two nn-dimensional vectors AA and BB, A,BRnA,B \in \mathbb{R}^n, are said to be \emph{trivially orthogonal} if in every coordinate i[n]i \in [n], at least one of A(i)A(i) or B(i)B(i) is zero. Given the nn-dimensional Hamming cube {0,1}n\{0,1\}^n, we study the minimum cardinality of a set V\mathcal{V} of nn-dimensional {1,0,1}\{-1,0,1\} vectors, each containing exactly dd non-zero entries, such that every `possible' point A{0,1}nA \in \{0,1\}^n in the Hamming cube has some VVV \in \mathcal{V} which is orthogonal, but not trivially orthogonal, to AA. We give asymptotically tight lower and (constructive) upper bounds for such a set V\mathcal{V} except for the even values of dΩ(n0.5+ϵ)d \in \Omega(n^{0.5+\epsilon}), for any ϵ\epsilon, 0<ϵ0.50< \epsilon \leq 0.5.

Keywords

Cite

@article{arxiv.1610.00140,
  title  = {Induced bisecting families for hypergraphs},
  author = {Niranjan Balachandran and Rogers Mathew and Tapas Kumar Mishra and Sudebkumar Prasant Pal},
  journal= {arXiv preprint arXiv:1610.00140},
  year   = {2017}
}

Comments

9 pages, 1 figure

R2 v1 2026-06-22T16:07:35.739Z