Specializations of finitely generated subgroups of abelian varieties

Specializations of finitely generated subgroups of abelian varieties
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阿贝尔簇有限生成子群的特化

DOI:
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发表时间:
1989
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影响因子:
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通讯作者:
D. Masser
D. Masser
中科院分区:
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文献类型:
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作者:
Abelian Varieties;D. Masser

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给定一个函数域上的一般Mordell-Weil群,我们可以将其专门化为一个数字域。一段时间以来,人们已经知道群的同态是“无限经常”的单射。我们证明,这实际上是真的“几乎总是”,在某种意义上说,是定量的几乎最好的可能。
Given a generic Mordell-Weil group over a function field, we can specialize it down to a number field. It has been known for some time that the resulting homomorphism of groups is injective "infinitely often". We prove that this is in fact true "almost always", in a sense that is quantitatively nearly best possible.