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We announce here that Fermat's Last theorem was solved, but there is an easy proof of it on the basis of elemetary undergraduate mathematics. We shall disclose such an easy proof.

General Mathematics · Mathematics 2021-10-13 YangGon Kim , SooGon Kim , BumSeok Jeon , SeungKon Kim , ChangKon Kim

In the present article, we extend previous results of the author and we show that when $K$ is any quadratic imaginary field of class number one, Fermat's equation $a^p+b^p+c^p=0$ does not have integral coprime solutions $a,b,c \in K…

Number Theory · Mathematics 2019-09-19 George Catalin Turcas

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 propose a new approach at Fermat's Last Theorem (FLT) solution: for each FLT equation we associate a polynomial of the same degree. The study of the roots of the polynomial allows us to investigate the FLT validity. This technique,…

General Mathematics · Mathematics 2012-11-12 D. De Pedis

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 study Kummer's approach towards proving the Fermat's last Theorem for regular primes. Some basic algebraic prerequisites are also discussed in this report, and also a brief history of the problem is mentioned. We review among other…

History and Overview · Mathematics 2013-07-15 Manjil P. Saikia

We show that the generalized Fermat equations with signatures (5,5,7), (5,5,19), and (7,7,5) (and unit coefficients) have no non-trivial primitive integer solutions. Assuming GRH, we also prove the nonexistence of non-trivial primitive…

Number Theory · Mathematics 2014-01-28 Sander R. Dahmen , Samir Siksek

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

Fix a rational prime $r \geq 5$. In this article, we study the integer solutions of the generalized Fermat equation of signature $(2p,2q,r)$, namely $x^{2p}+y^{2q}=z^r$, where the primes $p,q \geq 5$ are varying. For each rational prime $r…

Number Theory · Mathematics 2025-09-26 Satyabrat Sahoo

We consider the generalized Fermat equation (*) $x^2 + y^3 = z^{25}$. Using the known parameterization of the primitive integral solutions to $x^2 + y^3 = z^5$ (due to Edwards), we reduce the solution of (*) to the solution of five specific…

Number Theory · Mathematics 2025-10-07 Nuno Freitas , Michael Stoll

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 $x^5 + y^5 = dz^p$ 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

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

Let $q > 5$ be a prime and $K$ a quadratic number field. In this article we extend a previous result of Najman and the author and prove that if $E/K$ is an elliptic curve with potentially multiplicative reduction at all primes $\mathfrak q…

Number Theory · Mathematics 2023-06-21 George C. Ţurcaş

We determine the set of primitive integral solutions to the generalised Fermat equation x^2 + y^3 = z^15. As expected, the only solutions are the trivial ones with xyz = 0 and the non-trivial pair (x,y,z) = (+-3, -2, 1).

Number Theory · Mathematics 2016-08-03 Samir Siksek , Michael Stoll

In our work we give the examples using Fermat's Last Theorem for solving some problems from algebra and number theory.

Number Theory · Mathematics 2016-07-05 Felix Sidokhine

In this paper two conjectures are proposed based on which we can prove the first case of Fermat's Last Theorem(FLT) for all primes $p \equiv -1 (\bmod~6)$. With Pollaczek's result {\bf [1]} and the conjectures the first case of FLT can be…

History and Overview · Mathematics 2007-05-23 Joseph Amal Nathan

We formalise the proof of the first case of Fermat's Last Theorem for regular primes using the \emph{Lean} theorem prover and its mathematical library \emph{mathlib}. This is an important 19th century result that motivated the development…

Logic in Computer Science · Computer Science 2023-05-23 Alex J. Best , Christopher Birkbeck , Riccardo Brasca , Eric Rodriguez Boidi

This research focuses on the Numerical approach for Fermat's Last theorem. We can induce an Alternative form of Fermat's last theorem by using particular geometric mapping $\mathcal{M}$ on a Cartesian plane to a Torus. It transforms the…

General Mathematics · Mathematics 2019-12-10 Youngik Lee

Let $p$ be a prime number. In the early 2000s, it was proved that the Fermat equations with coefficients \[3x^p + 8y^p + 21z^p =0\quad \text{ and } \quad 3x^p + 4y^p + 5z^p=0 \] do not admit non-trivial solutions for a set of exponents $p$…

Number Theory · Mathematics 2016-06-15 Nuno Freitas , Alain Kraus