Discreteness of volumes of divisors on Calabi-Yau type varieties

Fuente: arXiv
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Main Author: Jiao, Junpeng
Format: Preprint
Published: 2025
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author Jiao, Junpeng
author_facet Jiao, Junpeng
contents We study the volumes of divisors in Calabi--Yau type varieties. We show that given a klt Calabi--Yau pair $(X,B)$ and an integral divisor $A$ on $X$, the volume of $A$ is in a fixed discrete set depending only on the dimension and singularities of $(X,B)$. As an application, we prove a boundedness result of polarized log Calabi--Yau pairs which was conjectured by Birkar.
format Preprint
id arxiv_https___arxiv_org_abs_2508_05082
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Discreteness of volumes of divisors on Calabi-Yau type varieties
Jiao, Junpeng
Algebraic Geometry
We study the volumes of divisors in Calabi--Yau type varieties. We show that given a klt Calabi--Yau pair $(X,B)$ and an integral divisor $A$ on $X$, the volume of $A$ is in a fixed discrete set depending only on the dimension and singularities of $(X,B)$. As an application, we prove a boundedness result of polarized log Calabi--Yau pairs which was conjectured by Birkar.
title Discreteness of volumes of divisors on Calabi-Yau type varieties
topic Algebraic Geometry
url https://arxiv.org/abs/2508.05082