2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74315We compute the Khovanov-Jacobsson number of an embedded torus in R^4. The answer is always 2, regardless of the embedding.7 pages, 2 figuresGeometric TopologyQuantum Algebra57Q45Khovanov's invariant for closed surfacestext