On F-pure thresholds and quasi-F-purity of hypersurfaces

Fuente: arXiv
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Main Authors: Garzella, Jack J, Jagathese, Vignesh
Format: Preprint
Published: 2025
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author Garzella, Jack J
Jagathese, Vignesh
author_facet Garzella, Jack J
Jagathese, Vignesh
contents We show that quasi-$F$-pure but not $F$-pure isolated quasi-homogeneous hypersurface singularities necessarily have $F$-pure threshold $1 - \frac{1}{p}$. This extends work of Bhatt and Singh beyond the Calabi-Yau case. We also classify the (quasi)-$F$-purity of Fermat hypersurfaces.
format Preprint
id arxiv_https___arxiv_org_abs_2509_06211
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On F-pure thresholds and quasi-F-purity of hypersurfaces
Garzella, Jack J
Jagathese, Vignesh
Commutative Algebra
Algebraic Geometry
Number Theory
13A35, 14B05, 14G40
We show that quasi-$F$-pure but not $F$-pure isolated quasi-homogeneous hypersurface singularities necessarily have $F$-pure threshold $1 - \frac{1}{p}$. This extends work of Bhatt and Singh beyond the Calabi-Yau case. We also classify the (quasi)-$F$-purity of Fermat hypersurfaces.
title On F-pure thresholds and quasi-F-purity of hypersurfaces
topic Commutative Algebra
Algebraic Geometry
Number Theory
13A35, 14B05, 14G40
url https://arxiv.org/abs/2509.06211