Dugald Macpherson (University of Leeds) – Oligomorphic groups and tensor categories – after Harman-Snowden (Part III)

This is a short series of talks on the extended manuscript `Oligomorphic groups and tensor categories’ by Nate Harman and Andrew Snowden 2204.04526. Motivated by representation theory of finite groups and Deligne interpolation, the authors construct concrete pre-Tannakian categories. The methods go via, for certain omega-categorical structures M, constructing measures on Aut(M). I will attempt to give an overview of the work.