Classification of exact structures using the Ziegler spectrum

Fuente: arXiv
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Main Author: Sauter, Julia
Format: Preprint
Published: 2025
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author Sauter, Julia
author_facet Sauter, Julia
contents Given an idempotent complete additive category, we show the there is an explicitly constructed topological space such that the lattice of exact substructures is anti-isomorphic to the lattice of closed subsets. In the special case that the additive category has weak cokernels, this topological space is an open subset of the Ziegler spectrum and this is a result of Kevin Schlegel. We also look at some module categories of rings where the Ziegler spectrum is known and calculate the global dimensions of the corresponding exact substructures. Second version contains minor changes to first version.
format Preprint
id arxiv_https___arxiv_org_abs_2506_02304
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Classification of exact structures using the Ziegler spectrum
Sauter, Julia
Representation Theory
Category Theory
18G25 (Primary), 18G05, 18E45 (Secondary)
Given an idempotent complete additive category, we show the there is an explicitly constructed topological space such that the lattice of exact substructures is anti-isomorphic to the lattice of closed subsets. In the special case that the additive category has weak cokernels, this topological space is an open subset of the Ziegler spectrum and this is a result of Kevin Schlegel. We also look at some module categories of rings where the Ziegler spectrum is known and calculate the global dimensions of the corresponding exact substructures. Second version contains minor changes to first version.
title Classification of exact structures using the Ziegler spectrum
topic Representation Theory
Category Theory
18G25 (Primary), 18G05, 18E45 (Secondary)
url https://arxiv.org/abs/2506.02304