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arXiv 2102.01388math.AG
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Landau-Ginzburg模型的奇异对数Calabi-Yau紧化

On singular log Calabi-Yau compactifications of Landau-Ginzburg models

Victor Przyjalkowski

摘要:

我们考虑构造Fano簇的弱Landau-Ginzburg模型的log Calabi-Yau紧化的过程。我们应用它的del Pezzo曲面和覆盖的射影空间的指数为1。对于次数大于2的覆盖,log Calabi-Yau紧化是奇异的;而且,不存在光滑的投射log Calabi-Yau紧化。我们还证明在考虑的情况下的猜想说,纤维的组件的数量超过无穷%和有限的纤维是等于尺寸的反规范系统的法诺品种。

英文摘要:

We consider the procedure that constructs log Calabi-Yau compactifications of weak Landau-Ginzburg models of Fano varieties. We apply it for del Pezzo surfaces and coverings of projective spaces of index one. For the coverings of degree greater then 2 the log Calabi-Yau compactification is singular; moreover, no smooth projective log Calabi-Yau compactification exists. We also prove in the cases under consideration the conjecture saying that the number of components of the fiber over infinity %and of finite fibers is equal to the dimension of an anticanonical system of the Fano variety.

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