# Peter LeFanu Lumsdaine: Essentially algebraic theories and Gabriel–Ulmer duality, part 2

**Time: **
Wed 2019-10-30 10.00 - 11.45

**Location: **
Kräftriket, Hus 5, Sal 16 (back to the usual room)

**Participating: **
Peter LeFanu Lumsdaine, SU

### Abstract

This will be a continuation of my talk from October 16.

Gabriel–Ulmer duality gives a tight connection between essentially algebraic theories and their categories of models. I will give an exposition of this duality, with an emphasis on its concrete logical interpretation and applications.