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We present a new quadratic Chabauty method to compute the integral points on certain even degree hyperelliptic curves. Our approach relies on a nontrivial degree zero divisor supported at the two points at infinity to restrict the $p$-adic…

Number Theory · Mathematics 2025-12-01 Stevan Gajović , J. Steffen Müller

We describe an algorithm to compute the local Coleman-Gross p-adic height at p on a hyperelliptic curve. Previously, this was only possible using an algorithm due to Balakrishnan and Besser, which was limited to odd degree. While we follow…

Number Theory · Mathematics 2024-11-13 Stevan Gajović , J. Steffen Müller

We give a method for the computation of integral points on a hyperelliptic curve of odd degree over the rationals whose genus equals the Mordell-Weil rank of its Jacobian. Our approach consists of a combination of the $p$-adic approximation…

Number Theory · Mathematics 2015-11-11 Jennifer S. Balakrishnan , Amnon Besser , J. Steffen Müller

We give the first explicit examples beyond the Chabauty-Coleman method where Kim's nonabelian Chabauty program determines the set of rational points of a curve defined over $\mathbb{Q}$ or a quadratic number field. We accomplish this by…

Number Theory · Mathematics 2018-11-14 Jennifer S. Balakrishnan , Netan Dogra

We give a formula for the component at p of the p-adic height pairing of a divisor of degree 0 on a hyperelliptic curve. We use this to give a Chabauty-like method for finding p-adic approximations to p-integral points on such curves when…

Number Theory · Mathematics 2014-12-31 Jennifer S. Balakrishnan , Amnon Besser , J. Steffen Müller

We generalize the explicit quadratic Chabauty techniques for integral points on odd degree hyperelliptic curves and for rational points on genus 2 bielliptic curves to arbitrary number fields using restriction of scalars. This is achieved…

Number Theory · Mathematics 2020-06-16 Jennifer S. Balakrishnan , Amnon Besser , Francesca Bianchi , J. Steffen Müller

In this paper, we develop an algorithm for computing Coleman--Gross (and hence Nekov\'a\v{r}) $p$-adic heights on hyperelliptic curves over number fields with arbitrary reduction type above $p$. This height is defined as a sum of local…

Number Theory · Mathematics 2025-03-03 Francesca Bianchi , Enis Kaya , J. Steffen Müller

We describe how the quadratic Chabauty method may be applied to explicitly determine the set of rational points on modular curves of genus $g>1$ whose Jacobians have Mordell--Weil rank $g$. This extends our previous work on the split Cartan…

Number Theory · Mathematics 2023-03-08 Jennifer S. Balakrishnan , Netan Dogra , Jan Steffen Müller , Jan Tuitman , Jan Vonk

Let $X$ be a curve of genus $g>1$ over $\mathbb{Q}$ whose Jacobian $J$ has Mordell--Weil rank $r$ and N\'eron--Severi rank $\rho$. When $r < g+ \rho - 1$, the geometric quadratic Chabauty method determines a finite set of $p$-adic points…

Number Theory · Mathematics 2024-03-07 Juanita Duque-Rosero , Sachi Hashimoto , Pim Spelier

We explore a number of problems related to the quadratic Chabauty method for determining integral points on hyperbolic curves. We remove the assumption of semistability in the description of the quadratic Chabauty sets…

Number Theory · Mathematics 2020-10-21 Francesca Bianchi

We determine the quadratic Chabauty set for integral points on elliptic curves of rank $2$ defined over imaginary quadratic fields using quadratic Chabauty. This builds on the work of Bianchi and Balakrishnan et al. We give the first…

Number Theory · Mathematics 2024-09-06 Aashraya Jha

We study genus one curves that arise as 2-, 3- and 4-coverings of elliptic curves. We describe efficient algorithms for testing local solubility and modify the classical formulae for the covering maps so that they work in all…

Number Theory · Mathematics 2011-03-28 Tom Fisher , Graham Sills

We give a new construction of $p$-adic heights on varieties over number fields using $p$-adic Arakelov theory. In analogy with Zhang's construction of real-valued heights in terms of adelic metrics, these heights are given in terms of…

Number Theory · Mathematics 2026-01-21 Amnon Besser , J. Steffen Müller , Padmavathi Srinivasan

We use a global version of Heath-Brown's $p-$adic determinant method developed by Salberger to give upper bounds for the number of rational points of height at most $B$ on non-singular cubic curves defined over $\mathbb{Q}$. The bounds are…

Number Theory · Mathematics 2018-05-03 Manh Hung Tran

We describe an algorithm to compute the local component at p of the Coleman-Gross p-adic height pairing on divisors on hyperelliptic curves. As the height pairing is given in terms of a Coleman integral, we also provide new techniques to…

Number Theory · Mathematics 2010-10-29 Jennifer S. Balakrishnan , Amnon Besser

In this article we give an algorithm for the computation of the number of rational points on the Jacobian variety of a generic ordinary hyperelliptic curve defined over a finite field of cardinality $q$ with time complexity $O(n^{2+o(1)})$…

Number Theory · Mathematics 2008-06-27 Robert Carls , David Lubicz

Consider the smooth projective models C of curves y^2=f(x) with f(x) in Z[x] monic and separable of degree 2g+1. We prove that for g >= 3, a positive fraction of these have only one rational point, the point at infinity. We prove a lower…

Number Theory · Mathematics 2016-08-03 Bjorn Poonen , Michael Stoll

We introduce an algorithm that can be used to compute the canonical height of a point on an elliptic curve over the rationals in quasi-linear time. As in most previous algorithms, we decompose the difference between the canonical and the…

Number Theory · Mathematics 2019-02-20 J. Steffen Müller , Michael Stoll

Conditionally on the Tate--Shafarevich and Bloch--Kato Conjectures, we give an explicit upper bound on the size of the $p$-adic Chabauty--Kim locus, and hence on the number of rational points, of a smooth projective curve $X/\mathbb{Q}$ of…

Number Theory · Mathematics 2023-10-10 L. Alexander Betts , David Corwin , Marius Leonhardt

A new approach has been recently developed to study the arithmetic of hyperelliptic curves $y^2=f(x)$ over local fields of odd residue characteristic via combinatorial data associated to the roots of $f$. Since its introduction, numerous…

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