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arXiv · 1706.07728

Analogue of the Brauer-Siegel theorem for Legendre elliptic curves

Richard Griffon
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Abstract

We prove an analogue of the Brauer-Siegel theorem for the Legendre elliptic curves over $\mathbb{F}_q(t)$. More precisely, if $d$ is an integer coprime to $q$, we denote by $E_d$ the elliptic curve with model $y^2=x(x+1)(x+t^d)$ over $K=\mathbb{F}_q(t)$. We give an asymptotic estimate of the product of the order of the Tate-Shafarevich group of $E_d$ (which is known to be finite) with its Néron-Tate regulator, in terms of the exponential differential height of $E_d$, as $d\to\infty$.

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Richard Griffon. 2017-06-23. Analogue of the Brauer-Siegel theorem for Legendre elliptic curves. https://doi.org/10.1016/j.jnt.2018.05.006

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