I was invited to give a minicourse about expander graphs at the summer school geometric group theory without boundaries (20-31 July 2020, virtual). The recordings of the talks are available here.
I was also invited to give a minicourse on expander graphs at the Graduate Student Concentration Week on Metric Geometry 25-29 July 2022 - Texas A&M
| 2022, 15 December | On coarse homomorphisms and their kernels, Séminaire d'Algèbres d'Opérateurs - IMJ-PRG (Paris) |
| 2022, 10 November | On group actions and expansion, RTG Colloquium - Göttingen |
| 2022, 15 September | Coarse groups, Workshop on Expansion and Approximation - Copenhagen |
| 2022, 1 September | An invitation to coarse groups, Geometry and Topology Seminar - Technion (Haifa) |
| 2022, 19 May | On strong ergodicity, C*-algebras and Markov operators of group actions, Operator algebras and Group Dynamics Workshop - CIRM (Marseille) |
| 2022, 10 May | On Roe algebras of warped cones, Oberseminar C*-Algebren - Münster |
| 2022, 5 May | Coarse structures, groups and automorphisms, Differential Geometry Seminar - Heidelberg |
| 2022, 4 May | Coarse groups and their coarse actions, Oberseminar Geometrie - Gießen |
| 2022, 3 March | An invitation to coarse groups, Wokshop: Geometric Structures in Group Theory - Oberwolfach |
| 2022, 9 February | Strong ergodicity, projections and Markov operators, NYC noncommutative geometry seminar - St Johns University (New York City) |
| 2022, 18 January | On projections, exhaustions by expanders and ergodic actions, Focused Research Workshop: Higher-Dimensional Expanders - Bristol |
| 2021, 22 July | Is high dimensional expansion invariant under coarse equivalence, Online meeting: high-dimensional expanders, coarse geometry and infinite group theory - Bristol |
| 2021, 1 June | Cube complexes with coupled links, Tee Seminar - Münster |
| 2021, 8 January | Expanders of dynamical origin - Heidelberg |
| 2020, 1 December | Markov operators and ghost projections, Oberseminar C*-Algebren - Münster |
| 2020, 23 November | Coarse groups and their coarse actions, GGT seminar - Münster |
| 2020, 17 August | Asymptotic expander graphs, Symmetries in Newcastle - Newcastle (Australia) |
| 2020, 1 July | Of measurable actions and finite graphs, Online geometry seminar - ETH (Zurich) |
| 2020, 27 May | From group actions to finite graphs and back, Operator Algebras Seminar - Copenhagen |
| 2019, 18 July | On metrics, measures and dynamics: expanders via warped cones, colloquium - Karlsruhe |
| 2019, 5 June | Geometry of actions on metric/measure spaces, Simons Semester on Geometric and Analytic Group Theory - IMPAN (Warsaw) |
| 2019, 10 May | Discrete fundamental group: the large and the small, Junior Topology and Group Theory seminar - Oxford |
| 2019, 11 April | An introduction to warped cones, Probability and Ergodic Theory seminar - Ben-Gurion University (Beer-Sheva) |
| 2019, 19 March | Discrete fundamental groups and warped cones - Indiana University (Bloomington - IN) |
| 2019, 14 March | Proving hyperbolicity for cube complexes, Spring Topology and Dynamics Conference - Birmingham (AL) |
| 2019, 12 March | Cube complexes with coupled links, Geometric Group Theory and Topology seminar - Tufts University (Boston - MA) |
| 2019, 10 January | Cube complexes with coupled links, Geometry and Topology seminar - Technion (Haifa) |
| 2018, 12 October | Expander graphs and how to find them, Geometry Graduate Colloquium - ETH (Zurich) |
| 2018, 4 October | Expanders via actions on manifolds, Geometry Tea - Cambridge |
| 2018, 23 August | Non-positively curved cube complexes with hyperbolic fundamental group - KAIST (Daejeon) |
| 2018, 18 May | Geometric constructions of expanders, Combinatorics Seminar - Warwick |
| 2018, 18 April | Coarse geometry of approximating graphs: discrete fundamental group, Mini-Workshop on Superexpanders and Their Coarse Geometry - Oberwolfach |
| 2018, 26 March | Warped systems of actions on metric spaces, Groups, Actions and von Neumann algebras seminar - Orsay |
| 2018, 29 January | A geometric construction of expanders, Algebra, Combinatorics, Measure Seminar - Lancaster |
| 2018, 22 January | Coarse geometry of expanders, Kleines Seminar - Münster |
| 2017, 30 September | Super-expanders via approximating graphs, Workshop on Operator algebras, Geometry and Actions - Warsaw |
| 2017, 2 May | Approximating graphs: a geometric constructions of expanders, Seminaire Groupes et Analyse - Neuchâtel |
| 2017, 27 February | An introduction to expanders and how to construct them, Junior Geometry and Topology Seminar - Warwick |
| 2022, 31 March | An invitation to coarse groups, Topological and Homological Methods in Group Theory - Bielefeld |
| 2021, 6 September | Coarse Groups, Ventotene International Workshop - Ventotene |
| 2019, 15 October | Strong Property (T) in the proof of the Zimmer Conjecture, Arbeitsgemeinschaft - Oberwolfach |
| 2018, 19 July | Constructing expanders by approximating geometric actions, GAGTA - Seoul |
| 2018, 5 July | Warped cones: a coarse geometric invariant of actions, workshop on Dynamical methods in Algebra, Geometry and Topology - Udine |
| 2018, 24 May | Cube Complexes with Coupled Links, workshop on Nonpositively Curved Groups on the Mediterranean - Nahsholim |
| 2017, 29 June | Approximating graphs: a geometric constructions of expanders, yGAGTA - Bilbao |