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Tubular approaches to
Baker's method for curves and varieties
Samuel Le Fourn |
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Vol. 14 (2020), No. 3, 763–785
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Abstract |
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Baker’s method, relying on estimates on linear forms in logarithms of algebraic numbers, allows one to prove in several situations the effective finiteness of integral points on varieties. In this article, we generalize results of Levin regarding Baker’s method for varieties, and explain how, quite surprisingly, it mixes (under additional hypotheses) with Runge’s method to improve some known estimates in the case of curves by bypassing (or more generally reducing) the need for linear forms in -adic logarithms. We then use these ideas to improve known estimates on solutions of -unit equations. Finally, we explain how a finer analysis and formalism can improve upon the conditions given, and give some applications to the Siegel modular variety . |
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Keywords
integral points, Baker's method, Runge's method, $S$-unit
equation
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Mathematical Subject Classification 2010
Primary: 11G35
Secondary: 11J86
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Milestones
Received: 18 February 2019
Revised: 20 August 2019
Accepted: 7 October 2019
Published: 1 June 2020
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Authors |
| Samuel Le Fourn | |
| Institut Fourier Université Grenoble Alpes CNRS Grenoble France |
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