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We prove that the local height of a point on a Drinfeld module can be computed by averaging the logarithm of the distance to that point over the torsion points of the module. This gives rise to a Drinfeld module analog of a weak version of…

Number Theory · Mathematics 2007-05-23 Dragos Ghioca , Thomas J. Tucker

We study rational points and torsion points on Drinfeld modular curves defined over rational function fields. As a consequence we derive a conjecture of Schweizer describing completely the torsion of Drinfeld modules of rank two over $\Bbb…

Number Theory · Mathematics 2009-02-27 Ambrus Pal

In this paper we prove a sparse equidistribution theorem for Gross points over the rational function field $\mathbb{F}_q(t)$. We apply this result to study the reduction map from CM Drinfeld modules to supersingular Drinfeld modules. Our…

Number Theory · Mathematics 2020-03-31 Ahmad El-Guindy , Riad Masri , Matthew Papanikolas , Guchao Zeng

In this paper we prove a special case of the Lehmer inequality for Drinfeld modules. Also, based on this inequality, we prove certain Mordell-Weil type of theorems for certain infinitely generated fields.

Number Theory · Mathematics 2007-05-23 Dragos Ghioca

Using equidistribution techniques from Arakelov theory as well as recent results obtained by Dimitrov, Gao, and Habegger, we deduce uniform results on the Manin-Mumford and the Bogomolov conjecture. For each given integer $g \geq 2$, we…

Number Theory · Mathematics 2024-12-25 Lars Kühne

It is conjectured that for fixed $A$, $r \ge 1$, and $d \ge 1$, there is a uniform bound on the size of the torsion submodule of a Drinfeld $A$-module of rank $r$ over a degree $d$ extension $L$ of the fraction field $K$ of $A$. We verify…

Number Theory · Mathematics 2016-09-06 Bjorn Poonen

Suppose E_1, E_2 are elliptic curves (over the complex numbers) together with standard double coverings of the projective line identifying a point and its inverse on E_i. Bogomolov, Fu and Tschinkel have asked if the number of common images…

Algebraic Geometry · Mathematics 2024-12-31 Christian Böhning , Hans-Christian Graf von Bothmer , David Hubbard

We prove the Dynamical Bogomolov Conjecture for endomorphisms of P^1\times P^1 defined over a number field. We use the equidistribution theorem for points of small height with respect to an algebraic dynamical system, combined with a…

Number Theory · Mathematics 2016-09-23 Dragos Ghioca , Khoa D. Nguyen , Hexi Ye

Averaging over imaginary quadratic fields, we prove, quantitatively, the equidistribution of CM points associated to 3-torsion classes in the class group. We conjecture that this equidistribution holds for points associated to ideals of any…

Number Theory · Mathematics 2021-05-25 Bob Hough

We study the $v$-adic distance from the torsion of a Drinfeld module to an affine variety.

Number Theory · Mathematics 2007-05-23 Dragos Ghioca

We prove an equidistribution result about Hecke orbits on the Picard group of Shimura curves coming from definite quaternion algebras over function fields. In particular, we show the equidistribution of Hecke orbits of supersingular…

Number Theory · Mathematics 2024-11-26 Matias Alvarado , Patricio Pérez-Piña

To each Drinfeld module over a finitely generated field with generic characteristic, one can associate a Galois representation arising from the Galois action on its torsion points. Recent work of Pink and R\"utsche has described the image…

Number Theory · Mathematics 2011-10-20 David Zywina

We study the group of extensions in the category of Drinfeld modules and Anderson's t-modules, and we show in certain cases that this group can itself be given the structure of a t-module. Our main result is a Drinfeld module analogue of…

Algebraic Geometry · Mathematics 2015-06-29 Matthew A. Papanikolas , Niranjan Ramachandran

We prove an analog of Siegel's theorem for integral points in the context of Drinfeld modules. The result holds for finitely generated submodules of the additive group over a function field of transcendence dimension 1.

Number Theory · Mathematics 2007-05-23 Dragos Ghioca , Thomas J. Tucker

We show that the module of integral points on a Drinfeld module satisfies a an analogue of Dirichlet's unit theorem, despite its failure to be finitely generated. As a consequence, we obtain a construction of a canonical finitely generated…

Number Theory · Mathematics 2010-08-02 Lenny Taelman

We prove an equidistribution statement for the reduction of Galois orbits of CM points on the special fiber of a Shimura curve over a totally real field, considering both the split and the ramified case. The main novelty of the ramified…

Number Theory · Mathematics 2025-04-17 Francesco Maria Saettone

We prove Zhang's Dynamical Manin-Mumford Conjecture and Dynamical Bogomolov Conjecture for dominant endomorphisms of (P^1)^n. We use the equidistribution theorem for points of small height with respect to an algebraic dynamical system,…

Number Theory · Mathematics 2019-02-20 Dragos Ghioca , Khoa D. Nguyen , Hexi Ye

In this paper we provide a short proof of the Riemann Hypothesis for Drinfeld modules which uses only basic notions from the theory of global function fields and of Drinfeld modules.

Number Theory · Mathematics 2025-12-16 Giacomo Micheli

We prove that in the backward orbit of a non-preperiodic point under the action of a Drinfeld module of generic characteristic there exist at most finitely many points S-integral with respect to another nonpreperiodic point. This provides…

Number Theory · Mathematics 2013-07-16 Dragos Ghioca

In this paper, we study the ramification of extensions of a function field generated by division points of rank 2 Drinfeld modules. Also conductors of certain rank 2 Drinfeld modules are defined as analogues of those for elliptic curves. A…

Number Theory · Mathematics 2024-09-17 Takuya Asayama , Maozhou Huang
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