2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/71411The notion of vertex operator coalgebra is presented which corresponds to the family of correlation functions of one string propagating in space-time splitting into n strings in conformal field theory. This notion is in some sense dual to the notion of vertex operator algebra. We prove that any vertex operator algebra equipped with a non-degenerate, Virasoro preserving, bilinear form gives rise to a corresponding vertex operator coalgebra.13 pagesQuantum AlgebraHigh Energy Physics - Theory17B69 (Primary), 81T40 (Secondary)text