Failure of the Hasse principle on general $K 3$ surfaces
Failure of the Hasse principle on general $K 3$ surfaces
复制标题
哈斯原理在一般 $K 3$ 表面上失效
DOI:
--
复制
发表时间:
2011
影响因子:
0.9
通讯作者:
Anthony Várilly
中科院分区:
文献类型:
--
作者:
B. Hassett;Anthony Várilly
Abstract We show that transcendental elements of the Brauer group of an algebraic surface can obstruct the Hasse principle. We construct a general $K 3$ surface $X$ of degree $2$ over $ \mathbb{Q} $, together with a 2-torsion Brauer class $\alpha $ that is unramified at every finite prime, but ramifies at real points of $X$. With motivation from Hodge theory, the pair $(X, \alpha )$ is constructed from a double cover of ${ \mathbb{P} }^{2} \times { \mathbb{P} }^{2} $ ramified over a hypersurface of bidegree $(2, 2)$.