Monochromatic infinite sets in Minkowski planes

Fuente: arXiv
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Autores principales: Frankl, Nóra, Gehér, Panna, Sagdeev, Arsenii, Tóth, Géza
Formato: Preprint
Publicado: 2023
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author Frankl, Nóra
Gehér, Panna
Sagdeev, Arsenii
Tóth, Géza
author_facet Frankl, Nóra
Gehér, Panna
Sagdeev, Arsenii
Tóth, Géza
contents We prove that for any $\ell_p$-norm in the plane with $1<p<\infty$ and for every infinite $\mathcal{M} \subset \mathbb{R}^2$, there exists a two-colouring of the plane such that no isometric copy of $\mathcal{M}$ is monochromatic. On the contrary, we show that for every polygonal norm (that is, the unit ball is a polygon) in the plane, there exists an infinite $\mathcal{M} \subset \mathbb{R}^2$ such that for every two-colouring of the plane there exists a monochromatic isometric copy of $\mathcal{M}$.
format Preprint
id arxiv_https___arxiv_org_abs_2308_08840
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Monochromatic infinite sets in Minkowski planes
Frankl, Nóra
Gehér, Panna
Sagdeev, Arsenii
Tóth, Géza
Combinatorics
Metric Geometry
05C15, 05D10, 52C10
We prove that for any $\ell_p$-norm in the plane with $1<p<\infty$ and for every infinite $\mathcal{M} \subset \mathbb{R}^2$, there exists a two-colouring of the plane such that no isometric copy of $\mathcal{M}$ is monochromatic. On the contrary, we show that for every polygonal norm (that is, the unit ball is a polygon) in the plane, there exists an infinite $\mathcal{M} \subset \mathbb{R}^2$ such that for every two-colouring of the plane there exists a monochromatic isometric copy of $\mathcal{M}$.
title Monochromatic infinite sets in Minkowski planes
topic Combinatorics
Metric Geometry
05C15, 05D10, 52C10
url https://arxiv.org/abs/2308.08840