do u know any reference for studying the maps $\bar{M}_{i,n}\rightarrow \bar{M}_{j,n-2}$ (moduli space of stable curves with marked points)where the map is given by identifying two marked points?
Thank you
do u know any reference for studying the maps $\bar{M}_{i,n}\rightarrow \bar{M}_{j,n-2}$ (moduli space of stable curves with marked points)where the map is given by identifying two marked points?
Thank you