中文

Carlitz扭曲:其动机上同调、调节器、zeta值与多对数

代数几何 2023-09-21 v2 数论

摘要

第一作者在[Gaz22b]中引入了整tt-动机上同调与(刚解析平凡)Anderson tt-动子的类模。本文致力于在Carlitz tt-动子的张量幂的特例——即Tate扭曲Z(n)\mathbb{Z}(n)的函数域对应物A(n)\underline{A}(n)——中确定它们。我们发现这些模与函数域算术的基本对象相关:整tt-动机上同调支配Carlitz多对数之间的线性关系,其挠率用Bernoulli-Carlitz数的分母表示,类模的Fitting理想是一个特殊的zeta值。我们还用广义Carlitz多对数表示了正nnA(n)\underline{A}(n)的调节器;在利用差分Galois理论及Anderson-Brownawell-Papanikolas判据建立其代数关系后,我们证明调节器为同构当且仅当nn与特征互素。

关键词

引用

@article{arxiv.2212.02972,
  title  = {Carlitz twists: their motivic cohomology, regulators, zeta values and polylogarithms},
  author = {Quentin Gazda and Andreas Maurischat},
  journal= {arXiv preprint arXiv:2212.02972},
  year   = {2023}
}

备注

This represents a significant update compared to the previous version. Notably, our late conjecture regarding the Fitting ideal of the torsion in the class module, expressed as Carlitz zeta values, has been established (Thm. C). Additionally, we clarified the connection between integral t-motivic cohomology and Carlitz polylogs (Thm. A) and determined the regulator ranks