Recent talks
- Solving semidecidable problems in group theory, Oxford Algebra Seminar, 2 November 2021
- Kaplansky's conjectures, Muenster GGT Seminar, 28 October 2021
- Kaplansky's conjectures, ETHZ Geometry Seminar, 20 October 2021
- Solving semidecidable problems in group theory, SMRI Algebra and Geometry Seminar, 5 October 2021
- Kaplansky's conjectures, Global NCG Seminar, 17 September 2021
- Diffuse groups, World of GroupCraft, 26 August 2021
- Kaplansky's conjectures, Isfahan Mathematics Colloquium, 4 August 2021
- Kaplansky's conjectures, Bonn Topology Seminar, 13 July 2021
- Kaplansky's conjectures, Ischia GOTHIC seminar, 8 July 2021
- Kaplansky's conjectures, Probabilistic and Geometric Group Theory, 23 June 2021
- Kaplansky's conjectures, Oxford Algebra Seminar, 8 June 2021
- Kaplansky's conjectures, Knot Theory Seminar of Roger Fenn and Louis Kauffman, 4 June 2021
- Kaplansky's conjectures, Technion Geometry and Topology Seminar, 3 June 2021
- Kaplansky's conjectures, Muenster C*-algebra Seminar, 1 June 2021
- Kaplansky's conjectures, Karlsruhe Topology Seminar, 17 April 2021
- Kaplansky's conjectures, Muenster Kramer Teeseminar, 13 April 2021
- Kaplansky's conjectures, NY Group Theory Seminar, 11 March 2021
- Kaplansky's conjectures, Cambridge GGT Seminar, 26 February 2021
- Kaplansky's conjectures, Symmetry in Newcastle, 22 February 2021
Not-so-recent talks
- Leighton's Theorem, Bielefeld-Münster Seminar on Groups, Geometry and Topology, 17 January 2020
- One-relator groups and the Haagerup property, University of Vienna Geometry and Analysis on Groups Research Seminar, 14 January 2020
- The isomorphism problem for Coxeter groups, Flags, Galleries and Reflection Groups, University of Sydney, 8 August 2019
- Boundaries of hyperbolic and CAT(0) groups and Cannon--Thurston maps, Bielefeld Oberseminar Groups and Geometry, 19 June 2019
- Boundaries of hyperbolic and CAT(0) groups and Cannon--Thurston maps, Bonn Oberseminar Topologie, 16 April 2019
- Boundaries of hyperbolic and CAT(0) groups and Cannon--Thurston maps, Münster Oberseminar Topologie, 28 January 2019
- Exotic one-relator groups, EPFL Ergodic and Geometric Group Theory Seminar, 17 May 2018
- Exotic one-relator groups, Neuchâtel Séminaire Groupes et Analyse, 15 May 2018
- Exotic one-relator groups, Regensburg SFB-Seminar, 10 April 2018.
- Dehn functions of one-relator groups, Oxford Junior Topology and Geometry Seminar, 28 February 2018.
- Finding and not finding unusual one-relator groups, Winter One-Relator Workshop, 11 January 2018.
- The geometry of the word problem, Warwick Junior Geometry and Topology Seminar, 8 January 2018.
- One-relator groups with no bad subgroups, Bielefeld Oberseminar Groups and Geometry, 3 January 2018.
- One-relator groups with no bad subgroups, Technion Groups, Dynamics and Related Topics Seminar, 7 December 2017.
- Determining hyperbolic 3-manifold groups by their finite quotients, Sydney Group Actions Seminar, 23 August 2017.
- Deficiencies of finite groups, yGAGTA, 28 June 2017. Talk notes.
- Hyperbolic groups and their subgroups, Glasgow Algebra Seminar, 15 February 2017
- The word problem and one-relator groups, Cambridge Geometric Group Theory Seminar, 10 August 2016