Selected invited talks
 Fredholm and elliptic boundary conditions for generalorder elliptic differential operators on compact manifolds
(handout) (Monash University, 30 May 2022)
 Index theory and boundary value problems for general firstorder elliptic differential operators
(handout) (University of York, 10 May 2022)
 Graphical decompositions for generalorder boundary value problems (handout) (University of Potsdam, 20 April 2021)
 The world of rough metrics (handout) (University of Potsdam, 4 December 2020)
 McIntoshery in Geometry (Harmonic Analysis Conference Celebrating the Mathematical Legacy of Alan McIntosh, Australian National University, 15 February 2018)

When Functional Calculus, Harmonic Analysis and Geometry party together...
(handout)
(Colloquium talk, Linköping University, 21 September 2018)

Firstorder elliptic boundary value problems beyond selfadjoint adapted boundary operators (handout)
(Instituto de Matemática Pura e Aplicada, 31 July 2018)

Spectral flow and the Riesz stability of the AtiyahSinger Dirac operator under bounded perturbations of local boundary conditions
(handout)
(University of Oxford, 16 March 2017)
 Riesz continuity of the AtiyahSinger Dirac operator under perturbations of the metric (University of Jyväskylä, 26 October 2016)
 Geometric singularities and a flow tangent to the Ricci flow
(Karlsruhe Institute of Technology, 21 June 2016)

Rough metrics, the Kato Square root problem, and the continuity of a flow tangential to the Ricci flow
(handout)
(Université ParisSud, 21 September 2015)

Geometry and the Kato square root problem
(handout)
(Beijing International Centre for Mathematical Research, 29 July 2014)
 Stability of quadratic estimates and manifolds with nonsmooth metrics (Monash University, 19 November 2013)

L^\infty coefficient operators and nonsmooth Riemannian metrics
(handout)
(Stanford University, 17 October 2012)

Square roots of perturbed subelliptic operators on Lie groups
(handout)
(University of Calgary, 13 August 2012)

The Kato square root problem on vector bundles with generalised bounded geometry
(handout)
(Video of the talk)
(Recent trends in geometric and nonlinear analysis, BIRS, Canada, 7 August 2012)

Quadratic Estimates and perturbations of Dirac type operators on doubling measure metric spaces
(Macquarie University, 10 Feb 2011)