There is no Cazanave's Theorem for punctured affine space

Fuente: arXiv
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Hauptverfasser: Brazelton, Thomas, Hornslien, William
Format: Preprint
Veröffentlicht: 2024
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author Brazelton, Thomas
Hornslien, William
author_facet Brazelton, Thomas
Hornslien, William
contents In his thesis, Cazanave proved that the set of naive $\mathbb{A}^1$-homotopy classes of endomorphisms of the projective line admits a monoid structure whose group completion is genuine $\mathbb{A}^1$-homotopy classes of endomorphisms of the projective line. In this very short note we show that such a statement is never true for punctured affine space $\mathbb{A}^n\setminus\{0\}$ for $n \ge 2$ .
format Preprint
id arxiv_https___arxiv_org_abs_2410_02668
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle There is no Cazanave's Theorem for punctured affine space
Brazelton, Thomas
Hornslien, William
Algebraic Topology
Algebraic Geometry
In his thesis, Cazanave proved that the set of naive $\mathbb{A}^1$-homotopy classes of endomorphisms of the projective line admits a monoid structure whose group completion is genuine $\mathbb{A}^1$-homotopy classes of endomorphisms of the projective line. In this very short note we show that such a statement is never true for punctured affine space $\mathbb{A}^n\setminus\{0\}$ for $n \ge 2$ .
title There is no Cazanave's Theorem for punctured affine space
topic Algebraic Topology
Algebraic Geometry
url https://arxiv.org/abs/2410.02668