When is the canonical conductor minimal?

Fuente: arXiv
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Main Author: Esentepe, Özgür
Format: Preprint
Published: 2025
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author Esentepe, Özgür
author_facet Esentepe, Özgür
contents For a one dimensional analytically unramified Cohen-Macaulay local ring $R$, the blowup algebra of the canonical ideal is a module finite birational extension. The conductor of this extension always contains the conductor of $R$. We study the case when there is equality. This is the case where $R$ is far from being almost Gorenstein. We study this property within the landscape of numerical semigroup rings and local Arf rings.
format Preprint
id arxiv_https___arxiv_org_abs_2509_22966
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle When is the canonical conductor minimal?
Esentepe, Özgür
Commutative Algebra
For a one dimensional analytically unramified Cohen-Macaulay local ring $R$, the blowup algebra of the canonical ideal is a module finite birational extension. The conductor of this extension always contains the conductor of $R$. We study the case when there is equality. This is the case where $R$ is far from being almost Gorenstein. We study this property within the landscape of numerical semigroup rings and local Arf rings.
title When is the canonical conductor minimal?
topic Commutative Algebra
url https://arxiv.org/abs/2509.22966