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The Chabauty--Kim method is a method for finding rational points on curves under certain technical conditions, generalising Chabauty's proof of the Mordell conjecture for curves with Mordell--Weil rank less than their genus. We show how the…

Number Theory · Mathematics 2019-05-15 Jennifer Balakrishnan , Netan Dogra

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

Determining all rational points on a curve of genus at least 2 can be difficult. Chabauty's method (1941) is to intersect, for a prime number p, in the p-adic Lie group of p-adic points of the jacobian, the closure of the Mordell-Weil group…

Algebraic Geometry · Mathematics 2023-06-07 Bas Edixhoven , Guido Lido

The Chabauty--Coleman--Kim method, under favourable circumstances, describes the set of integral points of a hyperelliptic curve inside the $p$-adic zeroes of certain transcendental functions. For an elliptic curve of Mordell--Weil rank…

Number Theory · Mathematics 2026-04-23 Jennifer S. Balakrishnan , Francesca Bianchi , Netan Dogra

In this thesis we develop a Chabauty-Kim theory for the relative completion of motivic fundamental groups, including Selmer stacks and moduli spaces of admissible torsors for the relative completion of the de Rham fundamental group. On one…

Number Theory · Mathematics 2020-06-19 Noam Kantor

The Chabauty--Kim method was developed with the aim of approaching effective Faltings', the problem of explicitly determining the finite set of rational points on a hyperbolic curve. This method has seen success with the more particular…

Number Theory · Mathematics 2026-04-15 David Corwin , Ishai Dan-Cohen

Results in $p$-adic transcendence theory are applied to two problems in the Chabauty-Coleman method. The first is a question of McCallum and Poonen regarding repeated roots of Coleman integrals. The second is to give lower bounds on the…

Number Theory · Mathematics 2020-08-24 Netan Dogra

The main point of the paper is to take the explicit motivic Chabauty-Kim method developed in papers of Dan-Cohen--Wewers and Dan-Cohen and the author and make it work for non-rational curves. In particular, we calculate the abstract form of…

Number Theory · Mathematics 2021-02-17 David Corwin

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

Faltings' theorem states that curves of genus $g \geq 2$ have finitely many rational points. Using the ideas of Faltings, Mumford, Parshin and Raynaud, one obtains an upper bound on the number of rational points, but this bound is too large…

Number Theory · Mathematics 2016-06-17 Jennifer Park

Let $X/\mathbb{Q}$ be a curve of genus $g \ge 2$ with Jacobian $J$ and let $\ell$ be a prime of good reduction. Using Selmer varieties, Kim defines a decreasing sequence \[ X(\mathbb{Q}_\ell) \supseteq X(\mathbb{Q}_\ell)_1 \supseteq…

Number Theory · Mathematics 2017-04-04 Samir Siksek

Building on work of Balakrishnan, Dogra, and of the first author, we provide some improvements to the explicit quadratic Chabauty method to compute rational points on genus $2$ bielliptic curves over $\mathbb{Q}$, whose Jacobians have…

Number Theory · Mathematics 2022-12-23 Francesca Bianchi , Oana Padurariu

We extend the explicit quadratic Chabauty methods developed in previous work by the first two authors to the case of non-hyperelliptic curves. This results in an algorithm to compute the rational points on a curve of genus $g \ge 2$ over…

Number Theory · Mathematics 2017-11-17 Jennifer S. Balakrishnan , Netan Dogra , J. Steffen Müller , Jan Tuitman , Jan Vonk

The Chabauty-Coleman method is a $p$-adic method for finding all rational points on curves of genus $g$ whose Jacobians have Mordell-Weil rank $r < g$. Recently, Edixhoven and Lido developed a geometric quadratic Chabauty method that was…

Number Theory · Mathematics 2021-12-13 Sachi Hashimoto , Pim Spelier

Answering a question of Zureick-Brown, we determine the cubic points on the modular curves $X_0(N)$ for $N \in \{53,57,61,65,67,73\}$ as well as the quartic points on $X_0(65)$. To do so, we develop a "partially relative" symmetric Chabauty…

Number Theory · Mathematics 2024-11-11 Josha Box , Stevan Gajović , Pip Goodman

We give a generalization of the method of "Elliptic Curve Chabauty" to higher genus curves and their Jacobians. This method can sometimes be used in conjunction with covering techniques and a modified version of the Mordell-Weil sieve to…

Number Theory · Mathematics 2013-04-10 Michael Mourao

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

In this article we prove the explicit Mordell Conjecture for large families of curves. In addition, we introduce a method, of easy application, to compute all rational points on curves of quite general shape and increasing genus. The method…

Number Theory · Mathematics 2017-08-29 Sara Checcoli , Francesco Veneziano , Evelina Viada

In this paper, we prove an explicit upper bound on the number of rational points on a smooth projective curve of genus at least two over a number field. This gives explicit constants in the uniform Mordell conjecture proposed by Mazur and…

Number Theory · Mathematics 2026-02-03 Jiawei Yu , Xinyi Yuan , Shengxuan Zhou

We study the Selmer varieties of smooth projective curves of genus at least two defined over $\mathbb{Q}$ which geometrically dominate a curve with CM Jacobian. We extend a result of Coates and Kim to show that Kim's non-abelian Chabauty…

Number Theory · Mathematics 2022-08-16 Jordan S. Ellenberg , Daniel Rayor Hast
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