2020 seminar talk: Actions of automorphism groups of Fraïssé limits on the space of linear orderings

Talk held by Colin Jahel (Claude Bernard University Lyon 1, France) at the KGRC seminar on 2020-10-08.


In 2005, Kechris, Pestov and Todorčević exhibited a correspondence between combinatorial properties of structures and dynamical properties of their automorphism groups. In 2012, Angel, Kechris and Lyons used this correspondence to show the unique ergodicity of all the actions of some groups. In this talk, I will give an overview of the aforementioned results and discuss recent work generalizing results of Angel, Kechris and Lyons.

The slides for this talk are available.

Time and Place

Talk at 3:00pm via Zoom

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Kurt Gödel Research Center for Mathematical Logic. Währinger Straße 25, 1090 Wien, Austria. Phone +43-1-4277-50501. Last updated: 2010-12-16, 04:37.