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Towards generic base-point-freeness for hyperkähler manifolds of generalized Kummer type
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg ( IF 0.4 ) Pub Date : 2023-11-16 , DOI: 10.1007/s12188-023-00271-z
Mauro Varesco

We study base-point-freeness for big and nef line bundles on hyperkähler manifolds of generalized Kummer type: For \(n\in \{2,3,4\}\), we show that, generically in all but a finite number of irreducible components of the moduli space of polarized \(\textrm{Kum}^n\)-type varieties, the polarization is base-point-free. We also prove generic base-point-freeness in the moduli space in all dimensions if the polarization has divisibility one.



中文翻译:

广义 Kummer 型 hyperkähler 流形的通用基点自由度

我们研究广义 Kummer 类型的 hyperkähler 流形上的大线丛和 nef 线丛的基点自由度:对于\(n\in \{2,3,4\}\),我们表明,一般在除有限数之外的所有情况下极化\(\textrm{Kum}^n\)型簇的模空间的不可约分量,极化是无基点的。如果极化具有整除性,我们还证明了所有维度的模空间中的通用基点自由性。

更新日期:2023-11-16
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