Zariski decompositions of numerical cycle classes

Zariski decompositions of numerical cycle classes
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数值循环类的 Zariski 分解

DOI:
10.1090/jag/677
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发表时间:
2013
期刊:
arXiv: Algebraic Geometry
影响因子:
--
通讯作者:
Brian Lehmann
Brian Lehmann
中科院分区:
--
文献类型:
--
作者:
Mihai Fulger;Brian Lehmann

文献摘要

被引文献

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我们构造了一个任意余维的循环类的Zerkiki分解。这种分解类似于众所周知的除数构造。例子说明了循环类的Zebraki分解如何反映底层空间的几何形状。我们还分析了双有理行为的Zagliki分解,导致藤田近似型曲线类的结果。
We construct a Zariski decomposition for cycle classes of arbitrary codimension. This decomposition is an analogue of well-known constructions for divisors. Examples illustrate how Zariski decompositions of cycle classes reflect the geometry of the underlying space. We also analyze the birational behavior of Zariski decompositions, leading to a Fujita approximation-type result for curve classes.