Gallai-Schur Triples and Related Problems

Fuente: arXiv
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Main Authors: Mao, Yaping, Robertson, Aaron, Wang, Jian, Yang, Chenxu, Yang, Gang
Format: Preprint
Published: 2025
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author Mao, Yaping
Robertson, Aaron
Wang, Jian
Yang, Chenxu
Yang, Gang
author_facet Mao, Yaping
Robertson, Aaron
Wang, Jian
Yang, Chenxu
Yang, Gang
contents Schur's Theorem states that, for any $r \in \mathbb{Z}^+$, there exists a minimum integer $S(r)$ such that every $r$-coloring of $\{1,2,\dots,S(r)\}$ admits a monochromatic solution to $x+y=z$. Recently, Budden determined the related Gallai-Schur numbers; that is, he determined the minimum integer $GS(r)$ such that every $r$-coloring of $\{1,2,\dots,GS(r)\}$ admits either a rainbow or monochromatic solution to $x+y=z$. In this article we consider problems that have been solved in the monochromatic setting under a monochromatic-rainbow paradigm. In particular, we investigate Gallai-Schur numbers when $x \neq y$, we consider $x+y+b=z$ and $x+y<z$, and we investigate the asymptotic minimum number of rainbow and monochromatic solutions to $x+y=z$ and $x+y<z$.
format Preprint
id arxiv_https___arxiv_org_abs_2502_21221
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Gallai-Schur Triples and Related Problems
Mao, Yaping
Robertson, Aaron
Wang, Jian
Yang, Chenxu
Yang, Gang
Combinatorics
05D10
Schur's Theorem states that, for any $r \in \mathbb{Z}^+$, there exists a minimum integer $S(r)$ such that every $r$-coloring of $\{1,2,\dots,S(r)\}$ admits a monochromatic solution to $x+y=z$. Recently, Budden determined the related Gallai-Schur numbers; that is, he determined the minimum integer $GS(r)$ such that every $r$-coloring of $\{1,2,\dots,GS(r)\}$ admits either a rainbow or monochromatic solution to $x+y=z$. In this article we consider problems that have been solved in the monochromatic setting under a monochromatic-rainbow paradigm. In particular, we investigate Gallai-Schur numbers when $x \neq y$, we consider $x+y+b=z$ and $x+y<z$, and we investigate the asymptotic minimum number of rainbow and monochromatic solutions to $x+y=z$ and $x+y<z$.
title Gallai-Schur Triples and Related Problems
topic Combinatorics
05D10
url https://arxiv.org/abs/2502.21221