Some Properties of Internal Locale Morphisms Externalised

Fuente: arXiv
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Main Author: Wrigley, Joshua
Format: Preprint
Published: 2023
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author Wrigley, Joshua
author_facet Wrigley, Joshua
contents We study morphisms of internal locales of Grothendieck toposes externally: treating internal locales and their morphisms as sheaves and natural transformations. We characterise those morphisms of internal locales that induce surjective geometric morphisms and geometric embeddings, demonstrating that both can be computed `pointwise'. We also show that the co-frame operations on the co-frame of internal sublocales can also be computed `pointwise' too.
format Preprint
id arxiv_https___arxiv_org_abs_2301_00961
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Some Properties of Internal Locale Morphisms Externalised
Wrigley, Joshua
Algebraic Geometry
Category Theory
18B25 (Primary) 18F70 (Secondary)
We study morphisms of internal locales of Grothendieck toposes externally: treating internal locales and their morphisms as sheaves and natural transformations. We characterise those morphisms of internal locales that induce surjective geometric morphisms and geometric embeddings, demonstrating that both can be computed `pointwise'. We also show that the co-frame operations on the co-frame of internal sublocales can also be computed `pointwise' too.
title Some Properties of Internal Locale Morphisms Externalised
topic Algebraic Geometry
Category Theory
18B25 (Primary) 18F70 (Secondary)
url https://arxiv.org/abs/2301.00961