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arXiv 1005.2289math.NT
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函数域上的岩泽理论

Aspects of Iwasawa theory over function fields

Andrea Bandini, Francesc Bars, Ignazio Longhi

摘要:

我们认为$\mathbb{Z}_p^{\mathbb{N}}$ -扩展$\mathcal{F}$的全球功能领域$F$和研究岩泽理论的各个方面,重点是两个主要主题已经(仍然)发展的数域的情况下,以及。当处理的Selmer组的阿贝尔簇$A$定义在$F$,我们提供了所有的成分,制定岩泽主要猜想有关的拟合理想和$p$ -进$L$ -功能相关联的$A$和$\mathcal{F}$。我们做同样的,与特征理想和$p$ -adic $L$ -功能,在类组的情况下(使用已知的结果特征理想和Stickelberger元素的$\mathbb{Z}_p^d$ -扩展)。最后一节给出了Carlitz模的挠引起的分圆$\mathbb{Z}_p^{\mathbb{N}}$ -扩张的更多细节:特别地,我们通过Coates-Wiles同态将分圆单位与Bernoulli-Carlitz数联系起来。

英文摘要:

We consider $\mathbb{Z}_p^{\mathbb{N}}$-extensions $\mathcal{F}$ of a global function field $F$ and study various aspects of Iwasawa theory with emphasis on the two main themes already (and still) developed in the number fields case as well. When dealing with the Selmer group of an abelian variety $A$ defined over $F$, we provide all the ingredients to formulate an Iwasawa Main Conjecture relating the Fitting ideal and the $p$-adic $L$-function associated to $A$ and $\mathcal{F}$. We do the same, with characteristic ideals and $p$-adic $L$-functions, in the case of class groups (using known results on characteristic ideals and Stickelberger elements for $\mathbb{Z}_p^d$-extensions). The final section provides more details for the cyclotomic $\mathbb{Z}_p^{\mathbb{N}}$-extension arising from the torsion of the Carlitz module: in particular, we relate cyclotomic units with Bernoulli-Carlitz numbers by a Coates-Wiles homomorphism.

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