Some of my talks are available on video:

Solving difference equations in sequences, DART X (Differential algebra and related topics), New York, 2/2020

On the dimension of systems of algebraic difference equations, Workshop on Model Theory, Differential/Difference Algebra, and Applications, New York, 3/2019

Triviality of torsors for difference algebraic groups, DART VIII (Differential Algebra and Related Topics), Linz, 9/2017

Torsors for difference algebraic groups, DART VII (Differential Algebra and Related Topics), New York, 10/2016

Torsors for difference algebraic groups, Interactions between Model Theory and Arithmetic Dynamics, Fields Institute, Toronto, 7/2016

Click here for the video

Linear differential equations and groups defined by difference equations, Kolchin Seminar in Differential Algebra, New York, 4/2016

Strongly étale difference algebras and Babbitt’s decomposition, Kolchin Seminar in Differential Algebra, City University of New York, 9/2015

Étale difference algebraic groups, Model Theory, Difference/Differential Equations and Applications, CIRM, Marseille, 4/2015

Difference algebraic groups, Kolchin Seminar in Differential Algebra, New York, 3/2015

A Jordan-Hölder theorem for difference algebraic groups, ACA (Applications of Computer Algebra), Fordham University, New York, 7/2014