2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187313Using general but simple covariance arguments, we classify the `quantum' Minkowski spaces for dimensionless deformation parameters. This requires a previous analysis of the associated Lorentz groups, which reproduces a previous classification by Woronowicz and Zakrzewski. As a consequence of the unified analysis presented, we give the commutation properties, the deformed (and central) length element and the metric tensor for the different spacetime algebras.Some comments/misprints have been added/corrected, to appear in Journal of Physics A (1996)Quantum AlgebraHigh Energy Physics - Theorytext