2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/91174Information-theoretic derivations of the formalism of quantum theory have recently attracted much attention. We analyze the axioms underlying a few such derivations and propose a conceptual framework in which, by combining several approaches, one can retrieve more of the conventional quantum formalism.13 pages, version presented at Quantum Theory: Reconsideration of Foundations conference, Vaxjo, Sweden, June 2003Quantum Physicstext