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Perfect powers expressible as sums of two fifth or seventh powers

100%

Dahmen S., Siksek S.

Acta Arithmetica

2014

tom 164

nr 1

65-100

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 non-existence of non-trivial primitive integer solutions for the signatures (5,5,11), (5,5,13), and (7,7,11). The main ingredients for obtaining our results are descent techniques, the method of Chabauty-Coleman, and the modular approach to Diophantine equations.

On the equation a³ + b³ⁿ = c²

81%

Bennett M., Chen I., Dahmen S., Yazdani S.

Acta Arithmetica

2014

tom 163

nr 4

327-343

We study coprime integer solutions to the equation a³ + b³ⁿ = c² using Galois representations and modular forms. This case represents perhaps the last natural family of generalized Fermat equations descended from spherical cases which is amenable to resolution using the so-called modular method. Our techniques involve an elaborate combination of ingredients, ranging from ℚ-curves and a delicate multi-Frey approach, to appeal to intricate image of inertia arguments.

Ograniczanie wyników

2 Acta Arithmetica

2 Dahmen S.

1 Bennett M.

1 Chen I.

1 Siksek S.

1 Yazdani S.

2 2014

Wyniki wyszukiwania

Perfect powers expressible as sums of two fifth or seventh powers

On the equation a³ + b³ⁿ = c²