Congratulations to Lewis Napper for passing his PhD viva! The viva took place on Thursday 20 February. The title of Lewis’ thesis is “Geometric Techniques in PDE Theory, Fluid Dynamics, and Relativity“. The external examiner was Prof Jan Slovak (Masaryk University, Czech Republic), and the internal examiner was Dr James Grant. Lewis‘ primary supervisor was Martin Wolf and his second supervisor was Ian Roulstone. The image below shows the Navier-Stokes equations, which played a role in the thesis.