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arXiv 0811.2965math.AGmath.DG
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双有理几何问题的一种新的几何方法

A new geometric approach to problems in birational geometry

Chen-Yu Chi, Shing-Tung Yau

摘要:

一个簇的双有理不变量的经典集合是它的复正则形式的空间和它们的一些正则定义的子空间。这些向量空间中的每一个都有一个典型的度量结构,它也是双有理不变的。这些度量化的向量空间将被称为原始变种的赋范空间。一个基本的问题是:给定两个轻度奇异的射影簇,其中第一簇的赋范空间与第二簇的赋范空间等距,可以在它们之间构造一个双有理映射来诱导这些等距吗?在这项工作中,一个肯定的答案,这个问题是给一般类型的品种。这可以看作是双有理等价的Torelli型定理。

英文摘要:

A classical set of birational invariants of a variety are its spaces of pluricanonical forms and some of their canonically defined subspaces. Each of these vector spaces admits a typical metric structure which is also birationally invariant. These vector spaces so metrized will be referred to as the pseudonormed spaces of the original varieties. A fundamental question is the following: given two mildly singular projective varieties with some of the first variety's pseudonormed spaces being isometric to the corresponding ones of the second variety's, can one construct a birational map between them which induces these isometries? In this work a positive answer to this question is given for varieties of general type. This can be thought of as a theorem of Torelli type for birational equivalence.

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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