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arXiv 1408.0937math.NT
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仿射外尔群重狄利克雷级数:$\tilde{A}$型

Affine Weyl Group Multiple Dirichlet Series: Type $\tilde{A}$

Ian Whitehead

摘要:

定义了一个多重狄利克雷级数,其函数方程组是仿射Kac-Moody根系$\tilde{A}_n$的外尔群,推广了有限Weyl群的多重狄利克雷级数理论.该结构是在有理函数域$\mathbb{F}_q(t)$上,并基于代数几何的四个自然公理。我们证明了这四个公理产生一个唯一的亚纯延拓的最大可能的区域和所需的无限群的对称性的系列。

英文摘要:

We define a multiple Dirichlet series whose group of functional equations is the Weyl group of the affine Kac-Moody root system $\tilde{A}_n$, generalizing the theory of multiple Dirichlet series for finite Weyl groups. The construction is over the rational function field $\mathbb{F}_q(t)$, and is based upon four natural axioms from algebraic geometry. We prove that the four axioms yield a unique series with meromorphic continuation to the largest possible domain and the desired infinite group of symmetries.

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