Complex representations of reductive algebraic groups with Frobenius maps in the category $\mathscr{X}$

Abstract

In this paper we introduce an abelian category $\mathscr{X}(\bf G)$ to study the complex representations of a reductive algebraic groups $\bf G$ with Frobenius map. We classify all the simple objects in $\mathscr{X}(\bf G)$ and show that this category is a highest weight category.