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arXiv:math/0202168 [math.AG]AbstractReferencesReviewsResources

On the geometry of the compactification of the universal Picard variety

Claudio Fontanari

Published 2002-02-18, updated 2004-03-22Version 3

Here we focus on the geometry of $\pdgbar$, the compactification of the universal Picard variety constructed by L. Caporaso. In particular, we show that the moduli space of spin curves constructed by M. Cornalba naturally injects into $\pdgbar$ and we give generators and relations of the rational divisor class group of $\pdgbar$, extending previous work by A. Kouvidakis.

Comments: Revised version (modified statement of Theorem 2 and other minor changes)
Categories: math.AG
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