2 problems

Let $X$ be a smooth projective complex K3 surface, let $J$ be a Kähler class, let $B\in H^{1,1}(X)\cap \widetilde{H}(X,\mathbb{Z})\otimes_{\mathbb{Z}}\mathbb{R}$, and let…

Let $X$ be a smooth projective complex K3 surface, let $J$ be a Kähler class for $X$, and let $B\in H^{1,1}(X)\cap \widetilde{H}(X,\mathbb{Z})\otimes_{\mathbb{Z}}\mathbb{R}$. Set…