**Video Presentations.**

Mirror symmetry, gauged linear sigma models, matrix factorizations, and related topics, March 31, 2020, CMSA, Boston, USA.

Interactions between Brauer Groups, Derived Categories and Birational Geometry of Projective Varieties, November 14, 2019, BIRS, Banff, Canada.

Matrix Factorizations in Mathematics and Physics, and TQFT June 16, 2017, Simons Center for Geometry and Physics, Stonybrook New York, USA.

Preprojective Algebras Interacting with Singularities, Cohen-Macaulay Modules and Weighted projective Spaces, October 8, 2015, Casa Mathemática Oaxaca, Mexico.

Wall Crossing, Quantum Integrable Systems, and TQFT November 18, 2014, Simons Center for Geometry and Physics, Stonybrook New York, USA.

Linking representation theory, singularity theory and non-commutative algebraic geometry, May 9, 2012, BIRS, Banff, Canada.

Derived categories in Algebraic Geometry, September 8, 2011, Steklov Institute, Moscow, Russia.

**Slides.**