2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79966We derive exact analytical solutions describing multi-soliton complexes and their interactions on top of a multi-component background in media with self-focusing or self-defocusing Kerr-like nonlinearities. These results are illustrated by numerical examples which demonstrate soliton collisions and field decomposition between localized and radiation modes.7 pages, 7 figuresPattern Formation and SolitonsExactly Solvable and Integrable Systemstext