Category Of C-Motives Over Finite Fields

30 Sep 2020  ·  Rad Eamail Arasteh, Hartl Urs ·

In this article we introduce and study a motivic category in the arithmetic of function fields, namely the category of motives over an algebraic closure $L$ of a finite field with coefficients in a global function field over this finite field. It is semi-simple, non-neutral Tannakian and possesses all the expected fiber functors... This category generalizes the previous construction due to Anderson and is more relevant for applications to the theory of $G$-Shtukas, such as formulating the analog of the Langlands-Rapoport conjecture over function fields. We further develop the analogy with the category of motives over $L$ with coefficients in $\mathbb{Q}$ for which the existence of the expected fiber functors depends on famous unproven conjectures. read more

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Number Theory