# Colloquium abstracts

**C.S. Rajan**

TIFR, Mumbai

December 2, 2021

**Gauss sums**: Classical Gauss sums appear in many number theoretic contexts. `Non-abelian' Gauss sums can be defined attached to finite dimensional representations of the general linear group in n variables over a finite field. We will try to present some aspects of these Gauss sums.