Cubic threefolds, Fano surfaces and the monodromy of the Gauss map
Cubic threefolds, Fano surfaces and the monodromy of the Gauss map
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三次三次、法诺曲面和高斯映射的单峰性
DOI:
10.1007/s00229-015-0785-z
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发表时间:
2016
影响因子:
0.6
通讯作者:
Thomas Krämer
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文献类型:
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作者:
Thomas Krämer
The Tannakian formalism allows to attach to any subvariety of an abelian variety an algebraic group in a natural way. The arising groups are closely related to moduli questions such as the Schottky problem, but in general they are still poorly understood. In this note we show that for the theta divisor on the intermediate Jacobian of a cubic threefold, the Tannaka group is exceptional of typeE6. This is the first known exceptional case, and it suggests a surprising connection with the monodromy of the Gauss map.
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1992
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1967
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2014
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2013
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2003
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