Projective Dehn twist via Lagrangian cobordism In this talk, I would like to explain my joint work with Weiwei Wu about understanding projective Dehn twist using Lagrangian cobordism. Date October 04, 2016 Speakers Cheuk Yu Mak, Institute for Advanced Study Affiliation Member, School of Mathematics Joint IAS-PU Symplectic Geometry Seminar School of Mathematics