Schrödinger–HJW theorem

The Schrödinger–HJW theorem, often referred to in the context of quantum mechanics and quantum information theory, typically relates to the process of state transformation in quantum systems. It combines elements of the Schrödinger picture of quantum mechanics with the idea of the Horn–Johnson–Wigner (HJW) theorem, which provides a characterization of when certain types of probabilistic mixtures can be represented in specific ways.