Slides of some talks:

  1. Five Worlds: a Mathematical Problem Determines Which One We Live In (Public lecture, Hunter College CUNY, Dec 2011)

  2. Definable sets in a free group

  3. Invited Talk at the International Congress of Mathamaticians in Seoul, South Korea 2014

    Click here to view slides of the talk.

  4. Groups acting on Lambda trees. Paris 2014

  5. Tarski problems for algebras, Oaxaca 2015

See my CV for a full list of lectures.