In this question, VA. said the stack $\overline{\mathcal{M}}_{g,n}(X,\beta)$ has been constructed over $\mathbb{Z}$. I can not find anything about it but I am quite interested in it. Is there any explicit reference about the construction?
In this question, VA. said the stack $\overline{\mathcal{M}}_{g,n}(X,\beta)$ has been constructed over $\mathbb{Z}$. I can not find anything about it but I am quite interested in it. Is there any explicit reference about the construction?