Habegger, Philipp and Ih, Su-ion. (2019) Distribution of integral division points on the algebraic torus. Transactions of the American Mathematical Society, 371. pp. 357-386.
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Official URL: https://edoc.unibas.ch/59215/
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Abstract
Let K be a number field with algebraic closure ¯K, and let S be a finite set of places of K containing all the infinite ones. Let Γ0 be a finitely generated subgroup of G\textupm(¯K), and let Γ⊂G\textupm(¯K) be the division group attached to Γ0. Here is an illustration of what we will prove in this article. Fix a proper closed subinterval I of [0,∞) and a nonzero effective divisor D on G\textupm which is not the translate of any torsion divisor on the algebraic torus G\textupm by any point of Γ with height belonging to I.
Then we prove a statement which easily implies that the set of ``integral division points on G\textupm with height near I'', i.e., the set of points of Γ with (standard absolute logarithmic Weil) height in J which are S-integral on G\textupm relative to D, is finite for some fixed subinterval J of [0,∞) properly containing I. We propose a conjecture on the nondensity of integral division points on semi-abelian varieties with prescribed height values, which generalizes some previously known conjectures as well as this finiteness result for G\textupm. Finally, we also propose an analogous version for a dynamical system on P1.
Then we prove a statement which easily implies that the set of ``integral division points on G\textupm with height near I'', i.e., the set of points of Γ with (standard absolute logarithmic Weil) height in J which are S-integral on G\textupm relative to D, is finite for some fixed subinterval J of [0,∞) properly containing I. We propose a conjecture on the nondensity of integral division points on semi-abelian varieties with prescribed height values, which generalizes some previously known conjectures as well as this finiteness result for G\textupm. Finally, we also propose an analogous version for a dynamical system on P1.
Faculties and Departments: | 05 Faculty of Science > Departement Mathematik und Informatik > Mathematik > Zahlentheorie (Habegger) |
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UniBasel Contributors: | Habegger, Philipp |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | American Mathematical Society |
ISSN: | 0002-9947 |
e-ISSN: | 1088-6850 |
Note: | Publication type according to Uni Basel Research Database: Journal article |
Identification Number: |
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Last Modified: | 24 Jul 2020 13:33 |
Deposited On: | 24 Jul 2020 13:33 |
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