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arxiv: 0712.3718 · v1 · submitted 2007-12-21 · 🧮 math.AG · math.RT

Picard groups of Siegel modular threefolds and theta lifting

classification 🧮 math.AG math.RT
keywords groupsmodularpicardsiegelthreefoldsgeneratehumbertlifting
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We show that the Humbert surfaces rationally generate the Picard groups of Siegel modular threefolds.

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