A transcendental Brauer–Manin obstruction to weak approximation on a Calabi–Yau threefold
A transcendental Brauer–Manin obstruction to weak approximation on a Calabi–Yau threefold
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超越布劳尔·马宁对卡拉比·丘三倍弱逼近的阻碍
DOI:
10.1007/s40993-021-00307-4
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发表时间:
2022
影响因子:
0.8
通讯作者:
Addington, Nicolas
中科院分区:
文献类型:
--
作者:
Hashimoto, Sachi;Honigs, Katrina;Lamarche, Alicia;Vogt, Isabel;Addington, Nicolas
In this paper we investigate the-rational points of a class of simply connected Calabi–Yau threefolds, which were originally studied by Hosono and Takagi in the context of mirror symmetry. These varieties are defined as a linear section of a double quintic symmetroid; their points correspond to rulings on quadric hypersurfaces. They come equipped with a natural 2-torsion Brauer class. Our main result shows that under certain conditions, this Brauer class gives rise to a transcendental Brauer–Manin obstruction to weak approximation. Hosono and Takagi showed that overeach of these Calabi–Yau threefoldsYis derived equivalent to a Reye congruence Calabi–Yau threefoldX. We show that these derived equivalences may also be constructed over, and we give sufficient conditions forXto not satisfy weak approximation. In the appendix, N. Addington exhibits the Brauer groups of each class of Calabi–Yau variety over.
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影响因子:
0.9
作者:
B. Hassett;Anthony Várilly
通讯作者:
Anthony Várilly
DOI:
--
发表时间:
2000
期刊:
--
影响因子:
--
作者:
Andrei Căldăraru
通讯作者:
Andrei Căldăraru
影响因子:
0.9
作者:
Evis Ieronymou
通讯作者:
Evis Ieronymou
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
N. Addington
通讯作者:
N. Addington
影响因子:
2
作者:
J. Berg;Anthony Várilly
通讯作者:
Anthony Várilly