2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/174518We give a new sufficient condition on a spectral triple to ensure that the quantum group of orientation and volume preserving isometries defined in \cite{qorient} has a $C^*$-action on the underlying $C^*$ algebra.submitted to the proceedings of a conference on quantum groups held in MPI, BonnQuantum AlgebraOperator Algebrastext