2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/150397A two-parameter deformation of the Lie algebra u$_2$ is used, in conjunction with the rotor system and the oscillator system, to generate a model for rotation-vibration spectroscopy of molecules and nuclei.10 pages, Latex File, published in Modern Group Theoretical Methods in Physics, J. Bertrand et al. (eds.), Kluwer Academic Publishers (1995), 27-36Atomic PhysicsChemical PhysicsQuantum AlgebraNuclear Theorytext