- DFG-Schwerpunkttagung SPP 1388 (2013)

(an overview and introduction to*Relative singularity categories I: Auslander resolutions*, with D. Yang).

- ICRA Bielefeld (2012)

(about*Relative singularity categories I: Auslander resolutions*, with D. Yang

and*Frobenius categories, Gorenstein algebras and rational surface singularities*, with O. Iyama, M. Wemyss and D. Yang)

- ICRA Tokyo (2010) and ART Uppsala (2011)

(about*The relative singularity category of a non-commutative resolution of singularities*, with I. Burban)

Slides for a talk on spherical subcategories:

- ICRA Sanya (2014) (corrected version --- missed a case in the examples of posets for discrete derived algebras)

(about joint work with A. Hochenegger & D. Ploog on*Spherical Subcategories in representation theory and geometry and the associated posets & triangulated invariants*).