Journal of Algebraic Geometry

Journal of Algebraic Geometry

Online ISSN 1534-7486; Print ISSN 1056-3911

   
 
 

 

Generalized integral points on abelian varieties and the Geometric Lang–Vojta Conjecture


Author: Xuan Kien Phung
Journal: J. Algebraic Geom. 34 (2025), 407-446
DOI: https://doi.org/10.1090/jag/842
Published electronically: January 16, 2025
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Abstract: Let $f \colon \mathcal {A} \to B$ be a family of abelian varieties over a compact Riemann surface $B$ and fix an effective horizontal divisor $\mathcal {D} \subset \mathcal {A}$. We study $(S, \mathcal {D})$-integral sections $\sigma$ of the family $\mathcal {A}$ where $S \subset B$ is arbitrary. These sections $\sigma$ are algebraic and satisfy the geometric condition $f(\sigma (B) \cap \mathcal {D})\subset S$. Developing the work of Parshin, we establish new quantitative results concerning the finiteness and the polynomial growth of large unions of $(S, \mathcal {D})$-integral sections where $S$ can vary and is required to be finite only in a thin analytic open subset of $B$. Such results are out of the range of purely algebraic methods and imply new evidence and interesting phenomena to the Geometric Lang–Vojta Conjecture.


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Xuan Kien Phung
Affiliation: IRMA, Université de Strasbourg, 67084 Strasbourg Cedex, France
Address at time of publication: Département d’informatique et de recherche opérationnelle, Université de Montréal, Montréal, Québec H3T 1J4, Canada; and Département de mathématiques et de statistique, Université de Montréal, Montréal, Québec H3T 1J4, Canada
MR Author ID: 1334211
ORCID: 0000-0002-4347-8931
Email: phungxuankien1@gmail.com

Received by editor(s): March 12, 2022
Received by editor(s) in revised form: October 7, 2024
Published electronically: January 16, 2025
Article copyright: © Copyright 2025 University Press, Inc.