Monochromatic non-commuting products

Fuente: arXiv
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Main Author: Bowen, Matt
Format: Preprint
Published: 2024
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author Bowen, Matt
author_facet Bowen, Matt
contents We show that a finite coloring of an amenable group contains `many' monochromatic sets of the form $\{x,y,xy,yx\},$ and natural extensions with more variables. This gives the first combinatorial proof and extensions of Bergelson and McCutcheon's non-commutative Schur theorem. Our main new tool is the introduction of what we call `quasirandom colorings,' a condition that is automatically satisfied by colorings of quasirandom groups, and a reduction to this case.
format Preprint
id arxiv_https___arxiv_org_abs_2405_03772
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Monochromatic non-commuting products
Bowen, Matt
Combinatorics
Dynamical Systems
Number Theory
05D10 43A07 37B20 54D80
We show that a finite coloring of an amenable group contains `many' monochromatic sets of the form $\{x,y,xy,yx\},$ and natural extensions with more variables. This gives the first combinatorial proof and extensions of Bergelson and McCutcheon's non-commutative Schur theorem. Our main new tool is the introduction of what we call `quasirandom colorings,' a condition that is automatically satisfied by colorings of quasirandom groups, and a reduction to this case.
title Monochromatic non-commuting products
topic Combinatorics
Dynamical Systems
Number Theory
05D10 43A07 37B20 54D80
url https://arxiv.org/abs/2405.03772