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arXiv 0709.0132math.NTmath.AG
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关于椭圆曲线的Heegner子群的指数

On the index of the Heegner subgroup of elliptic curves

Carlos Castano-Bernard

摘要:

设E是导体N的一条椭圆曲线,在Q上秩为1.因此存在定义在Q上的非常数态射X+0(N)--> E,其中X+0(N)= X 0(N)/wN,wN是模曲线X+0(N)的对合。在这个态射下,X+0(N)的Heegner点的迹映射到E上的有理点.本文研究了E(Q)上所有迹生成的子群的指数I。我们提出并讨论了一个猜想,即如果N是素数且I > 1,则实轨迹X+0(N)(R)的连通分支数大于1,或者(不太可能)Tate-Safarevich群的阶S是非平凡的.这个猜想得到了在N < 129999范围内满足上述假设的每个E上执行的计算的支持。这篇论文是为2007年5月8日至11日在图尔库举行的数学数论会议论文集而准备的。我们试图使报纸尽可能独立。

英文摘要:

Let E be an elliptic curve of conductor N and rank one over Q. So there is a non-constant morphism X+0(N) --> E defined over Q, where X+0(N) = X0(N)/wN and wN is the Fricke involution of the modular curve X+0(N). Under this morphism the traces of the Heegner points of X+0(N) map to rational points on E. In this paper we study the index I of the subgroup generated by all these traces on E(Q). We propose and also discuss a conjecture that says that if N is prime and I > 1, then either the number of connected components of the real locus X+0(N)(R) is greater than 1 or (less likely) the order S of the Tate-Safarevich group is non-trivial. This conjecture is backed by computations performed on each E that satisfies the above hypothesis in the range N < 129999. This paper was prepared for the proceedings of the Conference on Algorithmic Number Theory, Turku, May 8-11, 2007. We tried to make the paper as self contained as possible.

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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