%0 Journal Article %T A simple and quantum-mechanically motivated characterization of the formally real Jordan algebras %A Gerd Niestegge %J - %D 2020 %R 10.1098/rspa.2019.0604 %X Quantum theorys Hilbert space apparatus in its finite-dimensional version is nearly reconstructed from four simple and quantum-mechanically motivated postulates for a quantum logic. The recon- stru.. %U https://royalsocietypublishing.org/doi/10.1098/rspa.2019.0604