# Finite group actions on reductive groups and buildings and tamely-ramified descent in Bruhat-Tits theory

## TL;DR

This paper introduces a new approach to tamely-ramified descent in Bruhat-Tits theory, enhancing understanding of reductive groups and their actions on buildings, building on Rousseau's foundational work.

## Contribution

It presents a novel method for tamely-ramified descent in Bruhat-Tits theory, expanding the theoretical framework for reductive group actions on buildings.

## Key findings

- New approach to tamely-ramified descent
- Improved understanding of group actions on buildings
- Extension of Rousseau's foundational work

## Abstract

The purpose of the paper is to give a new approach to tamely-ramified descent in Bruhat-Tits theory. This descent was first studied by Guy Rousseau in his thesis.