2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/95126An elementary formula for the von Neumann and Renyi entropies describing quantum correlations in two-fermionic systems having four single particle states is presented. An interesting geometric structure of fermionic entanglement is revealed. A connection with the generalized Pauli principle is established.8 pagesQuantum Physicstext