Let $A$ be an abelian surface and $\text{Km}(A)$ be athe Kummer surface of $A$. If I remember correctcorrectly, the Picard number $\rho(\text{Km}(A))$ is equal to $16+\rho(A)$. Does anyone know the reference or the proof for this?
Does anyone know any reference or proof for this fact?