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arXiv 0810.0151math.AG
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无穷远处Hodge结构的无穷小变分

Infinitesimal Variations of Hodge Structure at Infinity

Javier Fernandez, Eduardo Cattani

摘要:

通过分析Hodge结构退化极化变分的局域性和无穷小性,引入了Hodge结构无穷小变分的概念。结果表明,所有这些结构都可以积分为Hodge结构的极化变分,反之,它们都是Hodge结构的无穷小变分(IVHS)在有限点的极限.作为一个例子,丰富的信息编码在这个新的结构,这种类型的无穷小变化的最大尺寸问题的一些情况下,并与“经典”的情况下,IVHS在有限点的对比。

英文摘要:

By analyzing the local and infinitesimal behavior of degenerating polarized variations of Hodge structure the notion of infinitesimal variation of Hodge structure at infinity is introduced. It is shown that all such structures can be integrated to polarized variations of Hodge structure and that, conversely, all are limits of infinitesimal variations of Hodge structure (IVHS) at finite points. As an illustration of the rich information encoded in this new structure, some instances of the maximal dimension problem for this type of infinitesimal variation are presented and contrasted with the "classical" case of IVHS at finite points.

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