arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2009.02533math.NT
收藏

有限域上Drinfeld模的同构类和同构类的显式描述

Explicit description of isogeny and isomorphism classes of Drinfeld modules over finite field

Sedric Nkotto Nkung Assong

摘要:

当旅行从数域理论的功能领域的理论,不能错过的深刻类比之间的秩1德林费尔德模块和群的根单位和类比之间的秩2德林费尔德模块和椭圆曲线。但到目前为止,在数域理论中还没有已知的结构类似于高阶r > 2的Drinfeld模。本文研究了高阶r > 2的Drinfeld模类.我们明确地描述了Weil多项式定义的Isolation类的秩r Drinfeld模块的任何秩r > 2。我们的明确描述的Weil多项式在很大程度上取决于余的分类issues类(类似本田泰特在阿贝尔簇)。实际上,Yu也明确地做了r = 2的工作。为了完成这一分类,我们定义了任意秩r的Drinfeld模的精细同构不变量的新概念,并证明了精细同构不变量与J-不变量一起完全决定了定义在有限域L上的秩r的Drinfeld模的L-同构类.

英文摘要:

When travelling from the number fields theory to the function fields theory, one cannot miss the deep analogy between rank 1 Drinfeld modules and the group of root of unity and the analogy between rank 2 Drinfeld modules and elliptic curves. But so far, there is no known structure in number fields theory that is analogous to the Drinfeld modules of higher rank r > 2. In this paper we investigate the classes of those Drinfeld modules of higher rank r > 2. We describe explicitly the Weil polynomials defining the isogeny classes of rank r Drinfeld modules for any rank r > 2. our explicit description of the Weil polynomials depends heavily on Yu's classification of isogeny classes (analogue of Honda-Tate at abelian varieties). Actually Yu has also explicitly did that work for r = 2. To complete the classification, we define the new notion of fine isomorphy invariants for any rank r Drinfeld module and we prove that the fine isomorphy invariants together with J-invariants completely determine the L-isomorphism classes of rank r Drinfeld modules defined over the finite field L.

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。

↑