2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79704We propose a formulation of the quantization problem of Manin quadruples, and show that a solution to this problem yields a quantization of the corresponding Poisson homogeneous spaces. We then solve both quantization problems in an example related to quantum spheres.Quantum AlgebraQuantum homogeneous spaces and quasi-Hopf algebrastext