I co-organized in April 2015, together with Wafic Sabra and Roger Nakad, the Conference on Differential Geometry at Notre Dame University-Louaize (Main campus) and the Center for Advanced Mathematical Sciences (CAMS) at the American University of Beirut.
I gave an online talk to the Mathematical Physics Group at the University of Bristol on June 12th, 2020, entitled "From the Berry-Robbins problem to the Atiyah-Sutcliffe conjectures and a Lie-theoretic generalization".
I was invited as one of the speakers in the symposium CAMS@20 (28-30 November 2019) in honor of Sir Michael Atiyah, and also to celebrate CAMS's 20-th anniversary. CAMS (Center for Advanced Mathematical Sciences) is a research center for the mathematical sciences located at the American University of Beirut (AUB).
I gave a talk at AUB in November 2019 about my article "Root systems and the Atiyah-Sutcliffe problem", published in the Journal of Mathematical Physics (2019).
I was an invited speaker at the Regional Collaborative Seminar on Geometry, Topology and Physics Workshop in October 2018, which was held at the NYU Abu Dhabi Institute in the UAE.
I gave a talk in April 2015 at AUB, entitled "An introduction to Kostant's convexity theorem": pdf slides.
I gave a talk in November 2014 at AUB, entitled "A symmetry reduction problem in hyperkahler geometry": abstract in pdf.
I gave a talk at Notre Dame University-Louaize on October 23, 2013, entitled "Introduction to Differential Forms and Applications": pdf.
I gave a talk in January 2013 at Leibniz Universitat Hannover, in their Oberseminar Differentialgeometrie, entitled Grassmannians, Quadrics and the Bogomolny Equations.