Endomorphisms and automorphisms of totally disconnected locally compact groups I

This lecture covers the definitions and basic results of endomorphisms and automorphisms of totally disconnected locally compact groups. It includes exercises to illustrate ideas, give some proofs, and define flatness. The lecture also introduces the concept of minimising subgroups and the scale of automorphisms. The theorem characterizes minimising subgroups and discusses the properties of scale in the context of Aut(G).