%0 Journal Article
%T On the rational Picard group of the moduli space of curves
%A Claudio Fontanari
%J Mathematics
%D 2010
%I arXiv
%X We speculate about an algebro-geometric proof of Harer's theorem on the rational Picard group of the moduli space of smooth complex curves. In particular, we refine the approach of Diaz and Edidin involving the Hurwitz space which parameterizes smooth covers of the projective line.
%U http://arxiv.org/abs/1012.4991v1