2 problems

Let $X$ be a projective variety of dimension $n$, let $N^k(X)$ denote the space of codimension-$k$ numerical cycle classes, and let $\alpha\in N^k(X)$. An effective cycle $z_m$ is…

Let $B$ be an abelian variety of dimension $n$, and let $\widehat B$ be its dual. The Fourier–Mukai isomorphism … identifies numerical cycle classes on $B$ with those on…