CALABI–YAU THREEFOLDS WITH A CURVE OF SINGULARITIES AND COUNTEREXAMPLES TO THE TORELLI PROBLEM

CALABI–YAU THREEFOLDS WITH A CURVE OF SINGULARITIES AND COUNTEREXAMPLES TO THE TORELLI PROBLEM
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带有奇点曲线的卡拉比-丘三重以及托雷利问题的反例

DOI:
10.1142/s0129167x00000229
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发表时间:
2000
影响因子:
0.6
通讯作者:
Balázs Szendrői
Balázs Szendrői
中科院分区:
数学4区
文献类型:
--
作者:
Balázs Szendrői

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同一变形族中的双有理卡拉比-丘三重为全局托雷利问题提供了一个“弱”反例,只要它们不是同构的。本文表明,某些去奇异化加权投影超曲面的变形提供了包含双有理簇的族的例子。使用专门化参数,构造的示例被证明是非同构的。
Birational Calabi–Yau threefolds in the same deformation family provide a "weak" counterexample to the global Torelli problem, as long as they are not isomorphic. In this paper, it is shown that deformations of certain desingularized weighted projective hypersurfaces provide examples of families containing birational varieties. The constructed examples are shown to be nonisomorphic using a specialization argument.
DOI: 10.1090/s0894-0347-1992-1149195-9
发表时间: 1992-09
影响因子: 3.9
作者:
J. Kollár;S. Mori
通讯作者: J. Kollár;S. Mori