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arXiv · 2408.01306

The Diophantine equation $b (b+1) (b+2) = t a (a + 1) (a + 2)$ and gap principle

Tsz Ho Chan
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Abstract

In this article, we are interested in whether a product of three consecutive integers $a (a+1) (a+2)$ divides another such product $b (b+1) (b+2)$. If this happens, we prove that there is some gaps between them, namely $b \gg \frac{a \log a)^{1/6}}{\log \log a)^{1/3}}$. We also consider other polynomial sequences such as $a^2 (a^2 + l)$ dividing $b^2 (b^2 + l)$ for some fixed integer $l$. Our method is based on effective Liouville-Baker-Feldman theorem.

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Tsz Ho Chan. 2024-08-02. The Diophantine equation $b (b+1) (b+2) = t a (a + 1) (a + 2)$ and gap principle. https://doi.org/10.1007/s10998-025-00635-3

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