On the rational Picard group of the moduli space of curves

Details On the rational Picard group of the moduli space of curves On the rational Picard group of the moduli space of curves

2010-12-22

arxiv.org/abs/1012.4991v1

Mathematics

Algebraic Geometry

Scientific paper

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.

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