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arXiv 0903.2330math.AG
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极小丛与细模空间

Minimal bundles and fine moduli spaces

Georg Hein

摘要:

研究了光滑射影曲线X上的层E,它是极小的,且满足对所有零次线丛L都有$h^0(E \otimes L) >0$.我们证明了这些层在Picard环面Pic(X)上定义了充分因子D(E)。接下来我们对秩为1和2的所有极小层进行分类。作为应用,我们证明了参数化秩为2的奇次丛的模空间可以作为一个Quot格式得到。

英文摘要:

We study sheaves E on a smooth projective curve X which are minimal with respect to the property that $h^0(E \otimes L) >0$ for all line bundles L of degree zero. We show that these sheaves define ample divisors D(E) on the Picard torus Pic(X). Next we classify all minimal sheaves of rank one and two. As an application we show that the moduli space parameterizing rank two bundles of odd degree can be obtained as a Quot scheme.

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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