2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62753We develop a spanning set for weak modules of C_2 co-finite vertex operator algebras. This spanning set has finiteness properties that we use to show weak modules are C_n co-finite and A_n(M) is finite dimensional.27 pagesQuantum Algebra17B69text