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arXiv · 1012.4991

On the rational Picard group of the moduli space of curves

Claudio Fontanari
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Abstract

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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Claudio Fontanari. 2010-12-22. On the rational Picard group of the moduli space of curves. https://arxiv.org/abs/1012.4991

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