English

Color avoidance for monotone paths

Combinatorics 2025-10-07 v2

Abstract

In 2014, Moshkovitz and Shapira determined the tower height for hypergraph Ramsey numbers of tight monotone paths. We address the color-avoiding version of this problem in which one no longer necessarily seeks a monochromatic subgraph, but rather one which avoids some colors. This problem was previously studied in uniformity two by Loh and by Gowers and Long. We show, in general, that the tower height for such Ramsey numbers requires one less exponential than in the usual setting. The transition occurs at uniformity three, where the usual Ramsey numbers of monotone paths of length nn are exponential in nn, but the color-avoiding Ramsey numbers turn out to be polynomial.

Keywords

Cite

@article{arxiv.2411.19823,
  title  = {Color avoidance for monotone paths},
  author = {Eion Mulrenin and Cosmin Pohoata and Dmitrii Zakharov},
  journal= {arXiv preprint arXiv:2411.19823},
  year   = {2025}
}

Comments

Reformatted for Discrete Analysis

R2 v1 2026-06-28T20:17:00.663Z