The “Y” sculpture series is made by aluminum tubes and connects 12 dodecagonal mirrored surfaces on which are engraved the maps of 12 cities visited by the artist in 2010: Moscow, Berlin, Hong Kong, Paris, Miami, London, Shenzhen, Vatican City, Shanghai, Grenoble, GĂ©neve and Florence. The Global network displays a tennis ball as an ephemeral photon bouncing in a crystalline geometry called Hyperdiamond by his inventor the computer engineer Raymond Aschheim engaged, since 2001, in the search for a topological structure able to describe the standard model of particles by including the force of gravity.