Cesare Tronci was in Paris from 21-23 July for the 5th Conference on Geometric Science of Information held at Sorbonne University. He co-organised, with François Gay-Balmaz (ENS Paris) a session on “Geometric & Symplectic Methods for Hydrodynamical Models” and gave a talk on “From quantum hydrodynamics to Koopman wavefunctions II?”. A link to the conference webpage is here. The conference has already produced a proceedings (preceedings?) which can be found here. The image below shows the logo of the conference.