Spaces over BO are thickened manifolds

Fuente: arXiv
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Main Author: Tanaka, Hiro Lee
Format: Preprint
Published: 2023
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author Tanaka, Hiro Lee
author_facet Tanaka, Hiro Lee
contents Consider the topologically enriched category of compact smooth manifolds (possibly with corners), with morphisms given by codimension zero smooth embeddings. Now formally identify any object X with its thickening X x [-1,1]. We prove that the resulting infinity-category of thickened smooth manifolds is equivalent to the infinity-category of finite spaces over BO. (This is one formalization of the philosophy that embedding questions become homotopy-theoretic upon passage to higher dimensions.) The central tool is a geometric construction of pushouts in this infinity-category, carried out with an eye toward proving analogous results in exact symplectic geometry. Notably, the proof never invokes smooth approximation nor any h-principle.
format Preprint
id arxiv_https___arxiv_org_abs_2307_09647
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Spaces over BO are thickened manifolds
Tanaka, Hiro Lee
Algebraic Topology
Geometric Topology
Consider the topologically enriched category of compact smooth manifolds (possibly with corners), with morphisms given by codimension zero smooth embeddings. Now formally identify any object X with its thickening X x [-1,1]. We prove that the resulting infinity-category of thickened smooth manifolds is equivalent to the infinity-category of finite spaces over BO. (This is one formalization of the philosophy that embedding questions become homotopy-theoretic upon passage to higher dimensions.) The central tool is a geometric construction of pushouts in this infinity-category, carried out with an eye toward proving analogous results in exact symplectic geometry. Notably, the proof never invokes smooth approximation nor any h-principle.
title Spaces over BO are thickened manifolds
topic Algebraic Topology
Geometric Topology
url https://arxiv.org/abs/2307.09647