Constructible hypersheaves via exit paths
Abstract
The goal of this article is to extend a theorem of Lurie representing constructible sheaves with values in , the -category of spaces, on a stratified space with poset of strata , as functors from the exit paths -category to . Lurie's representation theorem works provided satisfy the ascending chain condition. This typically rules out infinite dimensional examples of stratified space. Building on it and with the help of a stratified homotopy invariance theorem from Haine, we show that when is a nice enough -stratified space and when is itself stratified by posets satisfying the ascending chain condition, the -category of -constructible hypersheaves on is represented by functors from the exit paths -category of . There are two types of nice stratified spaces on which this extended representation theorem applies: conically stratified spaces and spaces that are sequential colimits of conically stratified spaces. Examples of application include the metric and the topological exponentials of a Fr\'echet manifold, locally countable simplicial complexes and more generally, locally countable cylindrically normal CW-complexes.
Keywords
Cite
@article{arxiv.2102.12325,
title = {Constructible hypersheaves via exit paths},
author = {Damien Lejay},
journal= {arXiv preprint arXiv:2102.12325},
year = {2021}
}
Comments
30 pages