A periodic minimal hypersurface in Euclidean 4-space with Clifford cone singularities
Let $\sigma(t)=\operatorname{sl}(\varpi t)$ be the lemniscatic sine, normalized to have period $2$. We study the zero set $\mathscr{M}$ of $S(x)=\sigma(x_1)\sigma(x_3)-\sigma(x_2)\sigma(x_4)$ in $\mathbb{R}^{4}$. We show that $\mathscr{M}$ is a complete embedded minimal hypersurface with infinitely many isolated singul...