2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/171002A positive definite Hermitian lattice is said to be 2-universal if it represents all positive definite binary Hermitian lattices. We find all 2-universal ternary and quaternary Hermitian lattices over imaginary quadratic number fields.Number Theory11E392-universal Hermitian lattices over imaginary quadratic fieldstext