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arXiv 0906.4424math.NT
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函数域的算术等价、Goss zeta函数及其推广

Arithmetic equivalence for function fields, the Goss zeta function and a generalization

Gunther Cornelissen, Aristides Kontogeorgis, Lotte van der Zalm

摘要:

Tate和Turner的一个定理说,整体函数场具有相同的zeta函数当且仅当相应曲线的雅可比矩阵是同构的。在这篇文章中,我们调查会发生什么,如果我们取代通常的(特征零)zeta函数由高斯介绍的正特征zeta函数。我们证明了,对于功能领域的特点超过他们的程度,平等的高斯zeta功能是相同的Gassmann等价(一个纯粹的群理论属性),但这种说法失败,如果程度超过的特点。我们介绍了'Teichmueller电梯'的高斯zeta函数,并表明,平等的,这样的总是相同的Gassmann等价。

英文摘要:

A theorem of Tate and Turner says that global function fields have the same zeta function if and only if the Jacobians of the corresponding curves are isogenous. In this note, we investigate what happens if we replace the usual (characteristic zero) zeta function by the positive characteristic zeta function introduced by Goss. We prove that for function fields whose characteristic exceeds their degree, equality of the Goss zeta function is the same as Gassmann-equivalence (a purely group theoretical property), but this statement fails if the degree exceeds the characteristic. We introduce a `Teichmueller lift' of the Goss zeta function and show that equality of such is always the same as Gassmann equivalence.

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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