The Choquet-Deny theorem and distal properties of totally disconnected locally compact groups of polynomial growth.
The Mautner Phenomenon for p-adic Lie Groups.
The relationship between algebraic numbers and expansiveness of automorphisms on compact abelian groups
Tidy subgroups for commuting automorphisms of totally disconnected groups: An analogue of simultaneous triangularisation of matrices.
Topological Nearrings Whose Additive Groups are Euclidean.