The Carlitz module and a differential Ax-Lindemann-Weierstrass theorem for the Euler gamma function
Year: 2025
Type: preprint
Abstract: We prove a differential transcendence result of type "Ax-Lindemann-Weierstrass" for Euler's gamma function. Given meromorphic functions $ζ_1,\dots,ζ_n$ of a complex variable $ν$ that are pairwise distinct modulo $\mathbb Z$ and algebraic over the field $k$ of meromorphic $1$-periodic functions, the functions $ Γ(ν-ζ_1(ν)),\dots,Γ(ν-ζ_n(ν))$ are differentially independent over the field $k(ν)$. We determine the structure of certain difference field extensions related to the torsion of an avatar of the Carlitz module over meromorphic functions. These extensions are abelian and purely transcendental, the latter property being crucial in our main result, and obtained applying a criterion of differential algebraicity of Hardouin and Singer.
Source: arXiv (Cornell University)
Authors: Di Vizio, Lucia, Pellarin, Federico
Language: English
Subfield: Applied Mathematics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7079276266
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