English

Matrix patterns with bounded saturation function

Combinatorics 2021-01-01 v1

Abstract

A 0-1 matrix MM contains a 0-1 matrix pattern PP if we can obtain PP from MM by deleting rows and/or columns and turning arbitrary 1-entries into 0s. The saturation function sat(P,n)\mathrm{sat}(P,n) for a 0-1 matrix pattern PP indicates the minimum number of 1s in a n×nn \times n 0-1 matrix that does not contain PP, but changing any 0-entry into a 1-entry creates an occurrence of PP. Fulek and Keszegh recently showed that the saturation function is either bounded or in Θ(n)\Theta(n). Building on their results, we find a large class of patterns with bounded saturation function, including both infinitely many permutation matrices and infinitely many non-permutation matrices.

Keywords

Cite

@article{arxiv.2012.14717,
  title  = {Matrix patterns with bounded saturation function},
  author = {Benjamin Aram Berendsohn},
  journal= {arXiv preprint arXiv:2012.14717},
  year   = {2021}
}
R2 v1 2026-06-23T21:33:02.604Z