Stable cuspidal curves and the integral Chow ring of ${\overline{\mathcal{M}}}_{2,1}$

Andrea Di Lorenzo, Michele Pernice, Angelo Vistoli

In this paper we introduce the moduli stack ${\tilde{\mathcal{M}}}_{g,n}$ of $n$-marked stable at most cuspidal curves of genus $g$ and we use it to determine the integral Chow r…