arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.01447math.NTmath.AG
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弱Analytic Geometry与$p$ -adic表示族的迹公式

Weak Analytic Geometry and a Trace Formula for Families of $p$-adic Representations

James Upton

摘要:

特征曲线是Coleman和Mazur提出的研究过收敛模形式的$p$ -adic族的有力工具。在这篇文章中,我们介绍了一套类似的工具,用于理解家庭的“过收敛”$p$ -进表示的$π_1(X)$,其中$X$是一个光滑的仿射品种在一个有限域的特征$p$。我们的主要定理是一个迹公式有关的$L$ -功能,这样一个家庭的几何序列相关联的特征。在单个$p$ -adic表示的情况下,我们的结果简化为著名的Monsky迹公式。我们将我们的理论应用于研究附在$X$上的$\mathbb{Z}_p$ -塔上的$T$ -adic指数和. Davis、Wan和Xiao应用这一理论的特殊情况证明了附在$X=\mathbb{A}^1$上的$\mathbb{Z}_p$ -塔上的本征曲线的谱晕分解。

英文摘要:

The eigencurve is a powerful tool introduced by Coleman and Mazur to study $p$-adic families of overconvergent modular forms. In this article, we introduce an analogous set of tools for understanding families of "overconvergent" $p$-adic representations of $π_1(X)$, where $X$ is a smooth affine variety over a finite field of characteristic $p$. Our main theorem is a trace formula relating the $L$-function of such a family to the geometry of a sequence of associated eigenvarieties. In the case of a single $p$-adic representation, our result reduces to the well known trace formula of Monsky. We apply our theory to the study of $T$-adic exponential sums attached to $\mathbb{Z}_p$-towers over $X$. Special cases of this theory have been applied by Davis, Wan, and Xiao to prove a spectral halo decomposition of the eigencurve attached to $\mathbb{Z}_p$-towers over $X=\mathbb{A}^1$.

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