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Related papers: On Darmon's program for the Generalized Fermat equ…

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In 2000, Darmon described a program to study the generalized Fermat equation using modularity of abelian varieties of $\mathrm{GL}_2$-type over totally real fields. The original approach was based on hard open conjectures, which have made…

Number Theory · Mathematics 2025-04-17 Nicolas Billerey , Imin Chen , Luis Dieulefait , Nuno Freitas

In this paper we carry out the steps of Darmon's program for the generalized Fermat equation $$ x^n + y^n = z^5. $$ In particular, we develop the machinery necessary to prove an optimal bound on the exponent $n$ for solutions satisfying…

Number Theory · Mathematics 2025-01-15 Imin Chen , Angelos Koutsianas

We prove a diophantine result on generalized Fermat equations of the form $x^p + y^p = z^r$ which for the first time requires the use of Frey abelian varieties of dimension $\geq 2$ in Darmon's program. For that, we provide an…

Number Theory · Mathematics 2016-05-10 Nicolas Billerey , Imin Chen , Luis Dieulefait , Nuno Freitas

In this paper, we develop the modular method for the generalized Fermat equation appearing in the title, within the framework of Darmon's program and using Frey hyperelliptic curves. As an application, we study a conjecture of Laradji,…

Number Theory · Mathematics 2026-05-05 Pedro-José Cazorla García , Angelos Koutsianas , Lucas Villagra-Torcomian

In this paper, we give a resolution of the generalized Fermat equations $$x^5 + y^5 = 3 z^n \text{ and } x^{13} + y^{13} = 3 z^n,$$ for all integers $n \ge 2$, and all integers $n \ge 2$ which are not a multiple of $7$, respectively, using…

Number Theory · Mathematics 2024-07-09 Nicolas Billerey , Imin Chen , Luis Dieulefait , Nuno Freitas

We follow the ideas of Darmon's program for solving infinite families of generalised Fermat equations of signatures $(p,p,r)$ and $(r,r,p)$, where, $r$ is a fixed prime and $p$ is varying. We do so by introducing a common framework for both…

Number Theory · Mathematics 2025-07-04 Martin Azon

We study the Generalized Fermat Equation $x^2 + y^3 = z^p$, to be solved in coprime integers, where $p \ge 7$ is prime. Using modularity and level lowering techniques, the problem can be reduced to the determination of the sets of rational…

Number Theory · Mathematics 2019-06-17 Nuno Freitas , Bartosz Naskrecki , Michael Stoll

Let $n \in \mathbb{Z}_{\geq 2}$. We study the generalized Fermat equation \[x^{13}+y^{13}=z^n, \quad x,y,z \in \mathbb{Z}, \quad \gcd(x,y,z)=1.\] Using a combination of techniques, including the modular method, classical descent, unit…

Number Theory · Mathematics 2025-10-15 Alex J. Best , Sander R. Dahmen , Nuno Freitas

In the beautiful article [11] Darmon proposed a program to study integral solutions of the generalized Fermat equation $Ax^p+By^q=Cz^r$. In the aforementioned article, Darmon proved many steps of the program, by exhibiting models of…

Number Theory · Mathematics 2025-12-18 Franco Golfieri Madriaga , Ariel Pacetti

In his breakthrough article, Darmon presented a program to study Generalized Fermat Equations (GFE) via abelian varieties of $\text{GL}_2$-type over totally real fields. So far, only Jacobians of some Frey hyperelliptic curves have been…

Number Theory · Mathematics 2026-03-02 Pedro-José Cazorla García , Lucas Villagra Torcomian

The primary aim of this paper is to study the generalized Fermat equation \[ x^2+y^{2n} = z^{3p} \] in coprime integers $x$, $y$, and $z$, where $n \geq 2$ and $p$ is a fixed prime. Using modularity results over totally real fields and the…

Number Theory · Mathematics 2022-04-14 Philippe Michaud-Jacobs

With a simple transformation of the three exponents the generalized Fermat equation can be put into the same form as the Fermat equation. When it is rewritten into this new altered form any real solutions to the altered equation equal a…

Number Theory · Mathematics 2011-05-25 Robert J. Betts

We give an overview of Darmon's program for resolving families of generalized Fermat equations with one varying exponent and survey what is currently known about this approach based on recent work of Billerey-Chen-Dieulefait-Freitas and…

Number Theory · Mathematics 2025-07-22 Imin Chen , Angelos Koutsianas

We prove two results concerning the generalized Fermat equation $x^4+y^4=z^p$. In particular we prove that the First Case is true if $p \neq 7$.

Number Theory · Mathematics 2007-05-23 Luis Dieulefait

We solve the Fermat-type equation \[ x^{13} + y^{13} = 3 z^7, \qquad \gcd(x,y,z) = 1 \] combining a unit sieve, the multi-Frey modular method, level raising, computations of systems of eigenvalues modulo 7 over a totally real field, and…

Number Theory · Mathematics 2025-10-16 Nicolas Billerey , Imin Chen , Lassina Dembélé , Luis Dieulefait , Nuno Freitas

We solve the Diophantine equations $x^5 + y^5 = dz^p$ with $d=2, 3$ for a set of prime numbers of density 1/4, 1/2, respectively. The method consists in relating a possible solution to another Diophantine equation and solving the later by…

Number Theory · Mathematics 2011-03-29 Luis Dieulefait , Nuno Freitas

We consider the Diophantine equation $7x^{2} + y^{2n} = 4z^{3}$. We determine all solutions to this equation for $n = 2, 3, 4$ and $5$. We formulate a Kraus type criterion for showing that the Diophantine equation $7x^{2} + y^{2p} = 4z^{3}$…

Number Theory · Mathematics 2021-06-30 Karolina Chałupka , Andrzej Dąbrowski , Gökhan Soydan

We solve the diophantine equations x^4 + d y^2 = z^p for d=2 and d=3 and any prime p>349 and p>131 respectively. The method consists in generalizing the ideas applied by Frey, Ribet and Wiles in the solution of Fermat's Last Theorem, and by…

Number Theory · Mathematics 2008-04-14 Luis Dieulefait , Jorge Jimenez Urroz

Using a combination of several powerful modularity theorems and class field theory we derive a new modularity theorem for semistable elliptic curves over certain real abelian fields. We deduce that if $K$ is a real abelian field of…

Number Theory · Mathematics 2016-09-07 Samuele Anni , Samir Siksek

We describe a strategy to attack infinitely many Fermat-type equations of signature $(r,r,p)$, where $r \geq 7$ is a fixed prime and $p$ is a prime allowed to vary. We use a variant of the modular method over totally real subfields of…

Number Theory · Mathematics 2013-11-01 Nuno Freitas
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