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arXiv 0808.3259math.CVmath.AG
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正则极化流形族的相对典范丛的正性

Positivity of relative canonical bundles for families of canonically polarized manifolds

Georg Schumacher

摘要:

给定一个有效参数化的正则极化流形族,纤维上的Kaehler-Einstein度量诱导出相对典范丛上的厄米度量。我们使用一个全局椭圆型方程来证明这个度量是严格正的。对于退化族,我们得到了一个奇异的厄米度量。主要应用是正则极化流形的模空间的拟投射性的解析证明。在arXiv中的进一步应用:1002.4858v2。

英文摘要:

Given an effectively parameterized family of canonically polarized manifolds the Kaehler-Einstein metrics on the fibers induce a hermitian metric on the relative canonical bundle. We use a global elliptic equation to show that this metric is strictly positive. For degenerating families we obtain a singular hermitian metric. Main application is an analytic proof of the quasi-projectivity of the moduli space of canonically polarized manifolds. Further applications in arXiv:1002.4858v2.

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