2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76485We prove that the group of Hamiltonian diffeomorphisms of the 2-sphere has infinite diameter with respect to Hofer's metric. Our approach is based on the theory of Lagrangian intersections.LATEX, 7 pagesDifferential Geometry58Dxx (Primary) 58F05 53C15 (Secondary)text