English

Avoiding Monochromatic Solutions to 3-term Equations

Combinatorics 2022-04-12 v2

Abstract

Given an equation, the integers [n]={1,2,,n}[n] = \{1, 2, \dots, n\} as inputs, and the colors red and blue, how can we color [n][n] in order to minimize the number of monochromatic solutions to the equation, and what is the minimum? The answer is only known for a handful of equations, but much progress has been made on improving upper and lower bounds on minima for various equations. A well-studied characteristic an equation, which has its roots in graph Ramsey theory, is to determine if the minimum number of monochromatic solutions can be achieved (asymptotically) by uniformly random colorings. Such equations are called common. We prove that no 3-term equations are common and provide a lower bound for a specific class of 3-term equations.

Keywords

Cite

@article{arxiv.2103.03350,
  title  = {Avoiding Monochromatic Solutions to 3-term Equations},
  author = {Kevin P. Costello and Gabriel Elvin},
  journal= {arXiv preprint arXiv:2103.03350},
  year   = {2022}
}

Comments

Streamlined construction of solutions beating random, added argument giving quadratic lower bound for certain equations

R2 v1 2026-06-23T23:46:39.166Z