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arXiv 0704.1340math.AG
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线性级数曲线模空间上的重言类及当$ρ=0$

Tautological classes on moduli spaces of curves with linear series and a push-forward formula when $ρ=0$

Deepak Khosla

摘要:

在线性级数曲线的模空间上定义重言式Chow类。在曲线的模空间的遗忘态射的相对维数为零的情况下,我们描述了这些类在Mgbar的Chow群中的像。作为应用,我们计算了Mgbar上几类不同因子的(虚拟)斜率。

英文摘要:

We define tautological Chow classes on the moduli space of curves with linear series. In the case where the forgetful morphism to the moduli space of curves has relative dimension zero, we describe the images of these classes in the Chow group of Mgbar. As an application, we compute the (virtual) slopes of several different classes of divisors on Mgbar.

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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