2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34514The individuation of point-events and the Hamiltonian way of distinguishing gravitational from inertial effects in general relativity are discussed.Latex, 21 pages, Talk given at the 15th SIGRAV Conference on {\it General Relativity and Gravitational Physics}, Villa Mondragone (Roma), September 6-10, 2002General Relativity and Quantum CosmologyAstrophysicsHigh Energy Physics - Theorytext