Coproducts Internal to Profinite Spaces

Fuente: arXiv
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Main Author: Tang, Jiacheng
Format: Preprint
Published: 2025
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_version_ 1866917067716820992
author Tang, Jiacheng
author_facet Tang, Jiacheng
contents We give a categorical explanation for many properties of profinite coproducts of profinite groups, which were previously proven on a case-by-case basis. All of these properties take the form "certain functors preserve profinite coproducts". We give various examples to show how our framework can be applied. We also point out connections to internal category theory and profinite Bass-Serre theory.
format Preprint
id arxiv_https___arxiv_org_abs_2511_05425
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Coproducts Internal to Profinite Spaces
Tang, Jiacheng
Category Theory
Rings and Algebras
18A35, 18D40, 20E18
We give a categorical explanation for many properties of profinite coproducts of profinite groups, which were previously proven on a case-by-case basis. All of these properties take the form "certain functors preserve profinite coproducts". We give various examples to show how our framework can be applied. We also point out connections to internal category theory and profinite Bass-Serre theory.
title Coproducts Internal to Profinite Spaces
topic Category Theory
Rings and Algebras
18A35, 18D40, 20E18
url https://arxiv.org/abs/2511.05425