Moduli Spaces of Unordered $n\ge 5$ Points on the Riemann Sphere and Their Singularities

Yue Wu, Bin Xu

For $n\ge 5$, it is well known that the moduli space ${\mathfrak{M}}_{0,\mathfrak{n}}$ of unordered $n$ points on the Riemann sphere is a quotient space of the Zariski open set $K_n$ of $\math…