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arXiv math/0310405math.AG
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Abel概型截面的限制

Restriction of sections of abelian schemes

Najmuddin Fakhruddin

摘要:

我们证明了以下结果:设B是复数上的光滑不可约拟拟射影簇,且B有一个投射紧化\bar{B},使得\bar{B} - B在\bar{B}中余维数至少为2.则B中存在一族光滑不可约曲线{C_q}_{q \in Q},以不可约簇Q为参数,使得如果p:A \to B是阿贝尔概型,q \in Q是泛点,则截面A(B)上的限制映射\to A(C_q)是同构.在特殊情况下,这回答了Graber,Harris,Mazur和Starr的问题。

英文摘要:

We prove the following result: Let B be a smooth, irreducible, quasi-projective variety over the complex numbers and assume that B has a projective compactification \bar{B} such that \bar{B} - B is of codimension at least two in \bar{B}. Then there exists a family of smooth ireducible curves {C_q}_{q \in Q} in B parametrised by an irreducible variety Q such that if p: A \to B is an abelian scheme and q \in Q is a generic point, then the restriction map on sections A(B) \to A(C_q) is an isomorphism. This answers, in a special case, a question of Graber, Harris, Mazur and Starr.

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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