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The equation formula here has no solution with x square

Published online by Cambridge University Press:  01 November 1999

Y. BUGEAUD
Affiliation:
Université Louis Pasteur, UFR de Mathématiques, 7 rue René Descartes, 67084 Strasbourg, France
M. MIGNOTTE
Affiliation:
Université Louis Pasteur, UFR de Mathématiques, 7 rue René Descartes, 67084 Strasbourg, France
Y. ROY
Affiliation:
Université Louis Pasteur, UFR de Mathématiques, 7 rue René Descartes, 67084 Strasbourg, France
T. N. SHOREY
Affiliation:
School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India

Abstract

We study the Diophantine equation

formula here

in integers x, y > 1, n > 2 and q [ges ] 2. Without loss of generality, we suppose that q is prime.

Saradha and Shorey [SS] considered equation (1·1) with x = z2 and proved that it has no solutions in the cases z > 31 or z ∈ {2, 3, 4, 8, 9, 16, 27}.Notice that the proof for z ∈ {2, 4, 8, 16} is elementary, whereas for z ∈ {3, 9, 27} the proof uses a result of Darmon–Merel [DM] which is a generalization of Wiles' result on Fermat's theorem. The purpose of the present paper is to treat completely the remaining cases and to prove the following result.

Type
Research Article
Copyright
© The Cambridge Philosophical Society 1999

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