Multiple Zeta Values in Function Fields using Motivic Framework

多重zeta值是由某些无穷分数和定义的真实的数。它们的精确值和它们之间的关系从欧拉时代起就一直困扰着数学家。特别是，数学家试图了解何时可以将有限数量的多重zeta值相加以获得另一个多重zeta值。虽然数学家有无数这样的关系的例子，证明这些构成所有这样的关系仍然是一个遥远的目标。这个项目将研究多个zeta值的近亲在一个替代的设置，有一个合理的希望证明这些结果的所有关系之间的集合。该项目的最终目标是开发一种新的方法来产生多个zeta值之间的关系族，并对这些方法产生的关系进行分类。该项目还将涉及到推广到附近的HBCU，以鼓励代表性不足的群体参加研究生水平的数学和STEM课程。更具体地说，该项目的主要目标是为证明定义在全局函数域上的某些多zeta值集的代数独立性奠定基础。第一步是开发一种方法，用于生成函数域上定义的多个zeta值之间的关系。PI将使用他最近开发的公式来实现这一点，该公式涉及t-动机和对偶t-动机之间的配对。接下来，PI将使用这些motivic结构来表明，变形的多重zeta值的空间是由某些具有精确算术意义的特殊函数生成的。该项目这一部分的最终目标是产生一个猜想，描述有多少多重zeta值关系使用这种tau代数结构来描述。该项目还将包含一个重要的分支，它实现了这些变形的多个zeta值作为Taelman单位模块不可分割的扩展中的生成元素。该项目的这一部分的最终结果将是一个定理，该定理准确地说明了我们必须将哪些元素邻接到Taelman的单位模，以确保它包含特定的变形多重zeta值。该项目由数学科学部的代数和数论项目以及刺激竞争研究的既定计划（EPSCoR）共同资助。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

Multiple zeta values are real numbers which are defined by certain infinite sums of fractions. Their exact values and the relationships between them have puzzled mathematicians since the time of Euler. In particular, mathematicians seek to understand when it is possible to add a finite number of multiple zeta values together to get another multiple zeta value. While mathematicians have infinitely many examples of such relationships, proving that these constitute all such relationships remains a distant goal. This project will study near-relatives of multiple zeta values in an alternative setting where there is a reasonable hope of proving such results about the set of all relationships between them. The end goal of the project is to develop a new method of producing families of relationships between multiple zeta values and to classify how many relationships such methods produce. This project will also involve outreach to nearby HBCUs to encourage underrepresented groups to participate in graduate level mathematics and STEM programs.More specifically, the main goal of this project is to lay the groundwork for proving the algebraic independence of certain sets of multiple zeta values defined over global function fields. The first step is to develop a method for generating relations between function field multiple zeta values which are defined over the function field. The PI will do this using his recently developed formulas involving a pairing between t-motives and the dual t-motives. Next, the PI will use these motivic constructions to show that spaces of deformed multiple zeta values are generated as a tau-algebra by certain special functions which have precise arithmetic meaning. The end goal of this part of the project is to produce a conjecture describing how many multiple zeta value relations are described using this tau-algebra structure. This project will also contain a significant offshoot which realizes these deformed multiple zeta values as generating elements in inseparable extensions of Taelman's unit module. The end result of this part of the project will be a theorem which states exactly which elements we must adjoin to Taelman's unit module in order to ensure that it contains specific deformed multiple zeta values.This project is jointly funded by the Algebra and Number Theory program in the Division of Mathematical Sciences and the Established Program to Stimulate Competitive Research (EPSCoR).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.