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arXiv math/9810208math.NT
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CM椭圆曲线挠率的界

Bounding the torsion in CM elliptic curves

Dipendra Prasad, C. S. Yogananda

摘要:

Merel证明了数域上的椭圆曲线的挠子群的阶仅以数域的次数有界。本说明的目的是研究什么是“权利界限”。本文利用Deuring关于CM椭圆曲线超奇异素数的结果,给出了任意数域上CM椭圆曲线扭点个数的估计,该扭点个数仅与数域的次数线性相关。这个结果也是A.利用复乘的主要定理证明了Silverberg约束扭元的阶.我们还给出了一个启发式,希望任何椭圆曲线上的扭点的数目是一个有界的线性度的数域。

英文摘要:

Merel has shown that the order of torsion subgroup of an elliptic curve over a number field can be bounded in terms of only the degree of the number field. The purpose of this note is to investigate what could be the `right bound'. In this paper we use the result of Deuring on the supersingular primes for a CM elliptic curves to give estimate on the number of torsion points on CM elliptic curves over any number field which depends only linearly with the degree of the number field. This result is also a simple corollary of a result of A. Silverberg bounding the order of torsion elements which was proved using the main theorem of Complex multiplication. We also give a heuristic for hoping that the number of torsion points on any elliptic curve be a bounded linearly with the degree of the number field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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