Inversion of series and the cohomology of the moduli spaces ${\mathcal{M}}_{0,n}^{\delta }$

Francis Brown, Jonas Bergström

For $n\ge 3$, let ${\mathcal{M}}_{0,n}$ denote the moduli space of genus 0 curves with $n$ marked points, and ${\overline{\mathcal{M}}}_{0,n}$ its smooth compactification. A theorem d…