Picard group of moduli of hyperelliptic curves
classification
🧮 math.AG
keywords
modulicoarsecurveshyperellipticpicardspaceapplicationcompute
read the original abstract
The main subject of this work is the difference between the coarse moduli space and the stack of hyperelliptic curves. We compute their Picard groups, giving explicit description of the generators. We get an application to the (non-)existence of a tautological family over the coarse moduli space.
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