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arXiv 2009.08249math.AG
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作为一般非约格式的限制的线丛的收敛性

Volumes of line bundles as limits on generically nonreduced schemes

Roberto Nunez

摘要:

线丛的体积是用一个limsup来定义的。这个limsup是否是一个极限是一个基本问题。它已被证明,这总是一般的情况下,约化概形计划。我们表明,卷是限制在两类计划,不一定是一般减少:余维一子计划的投影品种,使其组件的最大尺寸包含正常点和射影概形的nilradical平方等于零。

英文摘要:

The volume of a line bundle is defined in terms of a limsup. It is a fundamental question whether this limsup is a limit. It has been shown that this is always the case on generically reduced schemes. We show that volumes are limits in two classes of schemes that are not necessarily generically reduced: codimension one subschemes of projective varieties such that their components of maximal dimension contain normal points and projective schemes whose nilradical squared equals zero.

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