arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.00659math.NT
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动力学伽罗瓦论中的阿贝尔扩张

Abelian extensions in dynamical Galois theory

Jesse Andrews, Clayton Petsche

摘要:

我们提出了一个几何特征的动态伽罗瓦群与一个多项式是阿贝尔,我们证明了我们的猜想在几种情况下,包括稳定的二次情况下,在${\mathbb Q}$。在后临界无限的情况下,证明使用代数技术,包括一个结果有关的分歧塔循环$p$ -扩展。在后临界有限的情况下,证明使用的高度理论与Amoroso-Zannier和Amoroso-Dvornicich的结果,以及Arakelov-Zhang配对的性质。

英文摘要:

We propose a conjectural characterization of when the dynamical Galois group associated to a polynomial is abelian, and we prove our conjecture in several cases, including the stable quadratic case over ${\mathbb Q}$. In the postcritically infinite case, the proof uses algebraic techniques, including a result concerning ramification in towers of cyclic $p$-extensions. In the postcritically finite case, the proof uses the theory of heights together with results of Amoroso-Zannier and Amoroso-Dvornicich, as well as properties of the Arakelov-Zhang pairing.

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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