2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/90327The von Neumann entropy and the subentropy of a mixed quantum state are upper and lower bounds, respectively, on the accessible information of any ensemble consistent with the given mixed state. Here we define and investigate a set of quantities intermediate between entropy and subentropy.20 pages, no figuresQuantum Physicstext