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arXiv 1202.6358math.NT
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Hida家系Heegner点的变异

Variation of Heegner points in Hida families

Benjamin Howard

摘要:

给定一个权为2的模形式f和相应的p-adic伽罗瓦表示V_f,对于某些二次虚域K,通过取f上的模阿贝尔簇上的Heegner点的Kummer像,可以构造V_f的伽罗瓦上同调的标准类。我们证明了这些类可以在Hida族中随f的变化而插值,并为V_f的Hida万有普通变形构造了一个大Heegner点的Euler系.我们证明了这个大的欧拉系统的任何形式的Hida家庭的专业化是非平凡的,扩展Cornut和Vatsal的结果从模形式的重量2和平凡的字符,所有普通的模形式,并提出了一个水平非零猜想这些上同调类。水平非零猜想通过欧拉系统的理论暗示了格林伯格关于Hida族中Selmer群的一般秩的猜想。

英文摘要:

Given a weight two modular form f with associated p-adic Galois representation V_f, for certain quadratic imaginary fields K one can construct canonical classes in the Galois cohomology of V_f by taking the Kummer images of Heegner points on the modular abelian variety attached to f. We show that these classes can be interpolated as f varies in a Hida family, and construct an Euler system of big Heegner points for Hida's universal ordinary deformation of V_f. We show that the specialization of this big Euler system to any form in the Hida family is nontrivial, extending results of Cornut and Vatsal from modular forms of weight two and trivial character to all ordinary modular forms, and propose a horizontal nonvanishing conjecture for these cohomology classes. The horizontal nonvanishing conjecture implies, via the theory of Euler systems, a conjecture of Greenberg on the generic ranks of Selmer groups in Hida families.

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