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arXiv math/0003241math.NT
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不可分的伽罗瓦表示

Infinitely ramified Galois representations

Ravi Ramakrishna

摘要:

本文给出了对p >= 5的情形,如何构造两类在无穷多个素数上分歧的满射表示ρ:G_Q=Gal(\bar{Q} /Q)-> GL_2(Z_p).几乎所有这些素数的惯性像都是无挠的。第一种构造是无条件的。问题是,我们不能说ρ是否|_{G_p=Gal(\bar{Q_p} /Q_p)是结晶的或甚至潜在的半稳定的。第二种构造假设广义黎曼假设(GRH)。有了这个假设,我们可以进一步安排,|_{G_p}在p处是结晶的。我们注意到,以前已经用更基本的方法构造了无限分歧的 * 可约 * 表示。

英文摘要:

In this paper we show how to construct, for most p >= 5, two types of surjective representations ρ:G_Q=Gal(\bar{Q}/Q) -> GL_2(Z_p) that are ramified at an infinite number of primes. The image of inertia at almost all of these primes will be torsion-free. The first construction is unconditional. The catch is that we cannot say whether ρ|_{G_p=Gal(\bar{Q_p}/Q_p) is crystalline or even potentially semistable. The second construction assumes the Generalized Riemann Hypothesis (GRH). With this assumption we can further arrange that ρ|_{G_p} is crystalline at p. We remark that infinitely ramified *reducible* representations have been previously constructed by more elementary means.

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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