Alternatively, the λ i {\displaystyle \lambda _{i}} 's represent the square roots of the eigenvalues of the non-Hermitian matrix ρ ρ ~ {\displaystyle \rho {\tilde {\rho }}} .
Alternativ stellen die λ i {\displaystyle \lambda _{i}} die Wurzeln der Eigenwerte der nicht-hermiteschen Matrix ρ ρ ~ {\displaystyle \rho {\tilde {\rho }}} dar.