Hyperderivatives of the deformation series associated with arithmetic gamma values and characteristic p multiple zeta values

Abstract Number theory for positive characteristic contains analogues of the special values that were introduced by Carlitz; these include the Carlitz gamma values and Carlitz zeta values. These values were further developed to the arithmetic gamma values and multiple zeta values by Goss and Thakur, respectively. In this work, by generalizing a result attained by Chang et al., we obtain the algebraic independence of arithmetic gamma values, positive characteristic multiple zeta values of restricted indices, and the hyperderivatives of their deformations. We prove this by using Chang–Papanikolas–Yu's derivation, Maurichat's prolongation, Namoijam's formula, and Papanikolas' theory of the ‐motivic Galois group.

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Publication Details

Journal
Journal of the London Mathematical Society
Published
2026-02-26
DOI
https://doi.org/10.1112/jlms.70480
Primary Topic
Advanced Mathematical Identities
Type
article
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article

Hyperderivatives of the deformation series associated with arithmetic gamma values and characteristic p multiple zeta values

Ryotaro Harada, Daichi Matsuzuki
Journal of the London Mathematical Society
Advanced Mathematical Identities
article

Hyperderivatives of the deformation series associated with arithmetic gamma values and characteristic p multiple zeta values

Ryotaro Harada, Daichi Matsuzuki
article en

Abstract

Abstract Number theory for positive characteristic contains analogues of the special values that were introduced by Carlitz; these include the Carlitz gamma values and Carlitz zeta values. These values were further developed to the arithmetic gamma values and multiple zeta values by Goss and Thakur, respectively. In this work, by generalizing a result attained by Chang et al., we obtain the algebraic independence of arithmetic gamma values, positive characteristic multiple zeta values of restricted indices, and the hyperderivatives of their deformations. We prove this by using Chang–Papanikolas–Yu's derivation, Maurichat's prolongation, Namoijam's formula, and Papanikolas' theory of the ‐motivic Galois group.

Journal of the London Mathematical SocietyVol. 113(3)
Tokyo Medical University (JP), Tokyo University of Science (JP), National Tsing Hua University (TW)
Openalex Percentile: Top 25%
Advanced Mathematical Identities
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