Euler Characteristics of Moduli Spaces of Curves

Gilberto Bini, John Harer

Let ${mathcalM}_g^n$ be the moduli space of n-pointed Riemann surfaces of genus g. Denote by ${\bar{\mathcal{M}}}_g^n$ the Deligne-Mumford compactification of ${mathcalM}_g^n$. I…