Dear participants, A water bottle and a pin representing (I think) a mouse were found yesterday in the auditorium. If you have lost either of these items, you can collect them at the desk. Best wishes —s ===================================== Stefano Guerrini Professeur des Universités Institut Galilée, Université Sorbonne Paris Nord (USPN) Laboratoire d'Informatique de Paris-Nord (LIPN), CNRS (UMR 7030) stefano.guerrini@univ-paris13.fr