Marco Oppio Università di Trento Papers The correct formulation of Gleason's theorem in quaternionic Hilbert spaces Valter Moretti, Marco Oppio March 18, 2018 Gleason's theorem, spectral theory in quaternionic Hilbert spaces, trace class operators open access link Annales Henri Poincaré 19 (2018) 3321-3355 article file Quantum theory in quaternionic Hilbert space: How Poincaré symmetry reduces the theory to the standard complex one Valter Moretti, Marco Oppio September 26, 2017 quaternionic quantum mechanics, spectral theory, representation theory, von Neumann algebras open access link Rev. Math. Phys. 31, (2019) 1950013 article file Quantum theory in real Hilbert space: How the complex Hilbert space structure emerges from Poincaré symmetry Valter Moretti, Marco Oppio November 28, 2016 relativistic quantum theory, real spectral theory, representation theory open access link Reviews in Mathematical Physics 29, 1750021 (2017)