Precosheaves of pro-sets and abelian pro-groups are smooth

Andrei V. Prasolov

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arXiv · 1105.3167

Precosheaves of pro-sets and abelian pro-groups are smooth

Andrei V. Prasolov

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Abstract

Let $\mathbb{D}$ be the category of pro-sets (or abelian pro-groups). It is proved that for any Grothendieck site $X$, there exists a reflector from the category of precosheaves on $X$ with values in $\mathbb{D}$ to the full subcategory of cosheaves. In the case of precosheaves on topological spaces, it is proved that any precosheaf is smooth, i.e. is locally isomorphic to a cosheaf. Constant cosheaves are constructed, and there are established connections with shape theory.

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BibTeX RIS

Andrei V. Prasolov. 2011-05-16. Precosheaves of pro-sets and abelian pro-groups are smooth. https://arxiv.org/abs/1105.3167

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