Néron models and limits of Abel–Jacobi mappings
Néron models and limits of Abel–Jacobi mappings
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Néron 模型和阿贝尔-雅可比映射的极限
DOI:
10.1112/s0010437x09004400
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发表时间:
2010
影响因子:
1.8
通讯作者:
M. Kerr
中科院分区:
文献类型:
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作者:
M. Green;P. Griffiths;M. Kerr
Abstract We show that the limit of a one-parameter admissible normal function with no singularities lies in a non-classical sub-object of the limiting intermediate Jacobian. Using this, we construct a Hausdorff slit analytic space, with complex Lie group fibres, which ‘graphs’ such normal functions. For singular normal functions, an extension of the sub-object by a finite group leads to the Néron models. When the normal function comes from geometry, that is, a family of algebraic cycles on a semistably degenerating family of varieties, its limit may be interpreted via the Abel–Jacobi map on motivic cohomology of the singular fibre, hence via regulators on K-groups of its substrata. Two examples are worked out in detail, for families of 1-cycles on CY and abelian 3-folds, where this produces interesting arithmetic constraints on such limits. We also show how to compute the finite ‘singularity group’ in the geometric setting.
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Sampei Usui;Kazuya Kato
通讯作者:
Kazuya Kato
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
塩田 徹治;筧 三郎;覧 三郎;筧 三郎;筧 三郎;塩田 徹治;塩田 徹治;塩田 徹治;塩田 徹治;塩田 徹治;塩田 徹治;塩田 徹治
通讯作者:
塩田 徹治