2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115551A Group category is a spherical category whose simple objects are invertible. The invariant of Turaev-Viro with this particular category is in fact the invariant of Dijkgraaf-Witten whose the group and the 3-cocycle is given by the simple objects and the associativity constraint of the category.24p ref. addedQuantum AlgebraCategory Theory57N10, 18D10, 20J06text