The Jones polynomial of knots.
Talk given to Stellenbosch University Mathematics Society, 24 April 2019.
Don Zagier, The icosahedron, the Rogers-Ramanujan identities, and beyond. Lecture 1.
Lecture given at the Max Planck Instiute in Bonn on 3 March 2020.
Don Zagier, The icosahedron, the Rogers-Ramanujan identities, and beyond. Lecture 2.
Lecture given at the Max Planck Instiute in Bonn on 10 March 2020.
From the finite Fourier transform to topological quantum field theory,
North-meets-South colloquium, Mathematical Institute, Oxford, 6 May 2016.
String-net descriptions of TQFTs and the lifting map.
Edinburgh Mathematical Physics Group (EMPG) seminar, 16 March 2016.
Three-dimensional bordism representations,
Edinburgh Geometry seminar (EDGE), 17 March 2016.
Lagrangian subspaces and Fourier transforms,
Seminar on Contextuality and Noncommutative Geometry, Oxford, 9 Mar 2016.
Two different graphical descriptions of 3d TQFTs,
Sheffield topology seminar, 17 November 2015.
More geometry of the Ising model,
Pizza seminar on mathematical physics, geometry and topology,
Oxford, 4 Nov 2015.
Graphical calculus for 3d TQFTs,
Oxford topology seminar, 2 November 2015.
Spin-net formalism for 3-dimensional toplogical quantum field theories,
Higher Structures in Geometry and Physics conference,
Max Planck Institute, Bonn, 12-16 October 2015.
The centre of a fusion category, the adjoint representation, and the tube algebroid.
Higher topological quantum field theory and categorical quantum mechanics workshop,
ESI Institute, Vienna, 19-23 October 2015.
The geometry of the Ising model,
Oxford Junior Geometry and Topology seminar, 7 May 2015.
Three-dimensional bordism representations from generators and relations,
Parameterized Morse Theory and Low-Dimensional and Symplectic Topology workshop,
Banff, March 2014.
Three-dimensional bordism representations from generators and relations,
Structures on Tensor Categories and Topological Field Theories workshop,
Erlangen, March 2014.
The geometry of force,
Stellenbosch Theoretical Physics Seminar, 19 Sep 2013.
Transformation optics and cloaking devices,
VLS Seminar, 3 August 2012.
Filling space with knotted circles (write-up, some slides)
Stellenbosch colloquium talk, 22 Nov 2010.
Random matrices and the Riemann zeros,
Talk given in the Stellenbosch postgraduate seminar, 5 March 2009.