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arXiv 2401.01372math.NTmath-phmath.MP
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洗牌代数与多重 zeta 值分数的 Hopf 代数

Hopf algebras for the shuffle algebra and fractions from multiple zeta values

Li Guo, Wenchuan Hu, Hongyu Xiang, Bin Zhang

AI总结:

本文通过一族增权线性算子递归定义余积,并借助 Chen 分数及其局部性 Hopf 代数结构,为多重 zeta 值洗牌代数赋予 Hopf 代数结构。

摘要:

多重 zeta 值(MZVs)的代数被编码为 stuffle(拟洗牌)代数和洗牌代数。MZV stuffle 代数具有自然的 Hopf 代数结构。本文为 MZV 洗牌代数赋予一个 Hopf 代数结构。所需的余积通过一族增权线性算子的递归来定义。为验证 Hopf 代数公理,我们利用一族称为 Chen 分数的分数,这些分数已被用于研究 MZVs,并且也作为 MZV 洗牌代数的函数模型。通过在函数上应用自然导子并在局部性语境下工作,在 Chen 分数的线性张成上建立了一个局部性 Hopf 代数结构。随后证明这个局部性 Hopf 代数可下降到 MZV 洗牌代数上的一个 Hopf 代数,其余积满足与最初定义的余积相同的递归。因此两个余积一致,从而在 MZV 洗牌代数上建立了所需的 Hopf 代数公理。

英文摘要:

The algebra of multiple zeta values (MZVs) is encoded as a stuffle (quasi-shuffle) algebra and a shuffle algebra. The MZV stuffle algebra has a natural Hopf algebra structure. This paper equips a Hopf algebra structure to the MZV shuffle algebra. The needed coproduct is defined by a recursion through a family of weight-increasing linear operators. To verify the Hopf algebra axioms, we make use of a family of fractions, called Chen fractions, that have been used to study MZVs and also serve as the function model for the MZV shuffle algebra. Applying natural derivations on functions and working in the context of locality, a locality Hopf algebra structure is established on the linear span of Chen fractions. This locality Hopf algebra is then shown to descend to a Hopf algebra on the MZV shuffle algebra, whose coproduct satisfies the same recursion as the first-defined coproduct. Thus the two coproducts coincide, establishing the needed Hopf algebra axioms on the MZV shuffle algebra.

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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