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On a theorem of Harer

Robert Treger
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Abstract

We use Harer's stability theorem to give another proof of his fundamental theorem: The rank of the Picard group of the moduli space of smooth projective curves of genus g > 2 equals one.

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Robert Treger. 1996-01-08. On a theorem of Harer. https://arxiv.org/abs/alg-geom/9601008

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