2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/139762Analytic expressions for the probability density distribution of the linear entropy and the purity are derived for bipartite pure random quantum states. The explicit distributions for a state belonging to a product of Hilbert spaces of dimensions p and q are given for p=3 and any q>=3, as well as for p=q=4.Quantum Physicstext