4 problems

Let $s_0=2$ and $s_m=s_{m-1}(s_{m-1}-1)+1$ for $m\geq 1$ be Sylvester's sequence. For a positive integer $n$, let $X$ be the $n$-fold from the quasi-smooth Calabi–Yau hypersurface…

Let $s_0=2$ and $s_m=s_{m-1}(s_{m-1}-1)+1$ for $m\geq 1$ be Sylvester's sequence. For an integer $n\geq 2$, set … Let $X$ be a general hypersurface of degree $d$ in … It is a quasi…

Let $s_0=2$ and $s_m=s_{m-1}(s_{m-1}-1)+1$ for $m\geq 1$ be Sylvester's sequence. For each integer $n\geq 2$, set … A general hypersurface $X$ of degree $d$ in … is a terminal Fano…

Let $s_0=2$ and $s_m=s_{m-1}(s_{m-1}-1)+1$ for $m\geq 1$ be Sylvester's sequence. For a positive integer $n$, set … A general hypersurface $X$ of degree $d$ in the weighted project…