2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51480A review is given of ideas in electromagnetic duality and connections to integrable field theories with soliton solutions. This leads on to a summary of recent work on Lorentzian algebras.8 pages, Invited talk at Workshop on Integrable Theories, Solitons and Duality. To appear in JHEP proceedingsHigh Energy Physics - Theorytext