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arXiv 1010.4483math.AG
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分歧覆盖的Prym簇的通有Torelli定理

Generic Torelli theorem for Prym varieties of ramified coverings

Valeria Ornella Marcucci, Gian Pietro Pirola

摘要:

本文证明了从亏格为g的具有r个分支点的曲线的双覆盖空间到阿贝尔簇的模空间的Prym映射是泛内射的,若r>6且g>1,r=6且g>2,r=4且g>4,r=2且g>5.我们还表明,一个非常通用的Prym各种尺寸至少为4是不同构的雅可比矩阵。

英文摘要:

In this paper we prove that the Prym map, from the space of double coverings of a curve of genus g with r branch points to the moduli space of abelian varieties, is generically injective if r>6 and g>1, r=6 and g>2, r=4 and g>4, r=2 and g>5. We also show that a very generic Prym variety of dimension at least 4 is not isogenous to a Jacobian.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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