2 problems

Let $f \colon X \to \mathbb D$ be a projective degeneration of 3-dimensional Calabi–Yau varieties with maximally unipotent monodromy, and let $\kappa_f$ denote its BCOV logarithmic…

Let $f\colon \mathcal{X}\to S$ be a relatively minimal family, let $s_i\in S$ be a point such that the singular fiber $f^{-1}(s_i)$ is semi-stable, let $a_i$ denote its BCOV invari…