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arXiv 2407.04555math.NTmath.AG
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Hecke算子在GL₂(𝔽_q[T])上Drinfeld模形式的踪

Traces of Hecke operators on Drinfeld modular forms for $\mathrm{GL}_2(\mathbb{F}_q[T])$

Sjoerd de Vries

AI总结:

本文研究了Hecke算子在Drinfeld模形式上的踪,推导了闭式表达式并改进了Ramanujan界,同时探讨了cusp形式的分解问题。

摘要:

本文研究了在A=𝔽_q[T]的情况下,Hecke算子在水平为1的Drinfeld模形式上的踪。我们推导出对应于度数至多为2的素数的Hecke算子踪的闭式表达式,并为更高度数的素数提供算法。我们改进了Ramanujan界,并在假设每个Hecke特征值的乘数小于p的前提下,推导出水平为Γ₀(𝔫)的cusp形式分解为旧形式和新形式,这与Bandini-Valentino的猜想一致。

英文摘要:

In this paper, we study traces of Hecke operators on Drinfeld modular forms of level 1 in the case $A = \mathbb{F}_q[T]$. We deduce closed-form expressions for traces of Hecke operators corresponding to primes of degree at most 2 and provide algorithms for primes of higher degree. We improve the Ramanujan bound and deduce the decomposition of cusp forms of level $Γ_0(\mathfrak{p})$ into oldforms and newforms, as conjectured by Bandini-Valentino, under the hypothesis that each Hecke eigenvalue has multiplicity less than $p$.

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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