The Dimensions of Integral Points and Holomorphic Curves on the Complements of Hyperplanes

On the Zariski-Density of Integral Points on a Complement of Hyperplanes in P^n

We study the S-integral points on the complement of a union of hyperplanes in projective space, where S is a finite set of places of a number field k. In the classical case where S consists of the set of archimedean places of k, we completely characterize, in terms of the hyperplanes and the field k, when the (S-)integral points are not Zariski-dense.

关于射影空间中某些子簇余集上整点的潜在密度的研究

On potential density of integral points on the complement of some subvarieties in the projective space

本文研究了数域上 $n$ 维射影空间中特定闭子簇余集上整点的潜在密度，推广了 Corvaja-Zucconi 在低维射影空间中的相关结果。

Hodge theory of cyclic covers branched over a union of hyperplanes

Suppose that Y is a cyclic cover of projective space branched over a hyperplane arrangement D, and that U is the complement of the ramification locus in Y. The first theorem implies that the Beilinson-Hodge conjecture holds for U if certain multiplicities of D are coprime to the degree of the cover. For instance this applies when D is reduced with normal crossings. The second theorem shows that when D has normal crossings and the degree of the cover is a prime number, the generalized Hodge conjecture holds for any toroidal resolution of Y. The last section contains some partial extensions to m…

Integral structures in the $p$-adic holomorphic discrete series

For a local non-Archimedean field $K$ we construct ${\rm GL}_{d+1}(K)$-equivariant coherent sheaves ${\mathcal V}_{{\mathcal O}_K}$ on the formal ${\mathcal O}_K$-scheme ${\mathfrak X}$ underlying the symmetric space $X$ over $K$ of dimension $d$. These ${\mathcal V}_{{\mathcal O}_K}$ are ${\mathcal O}_K$-lattices in (the sheaf version of) the holomorphic discrete series representations (in $K$-vector spaces) of ${\rm GL}_{d+1}(K)$ as defined by P. Schneider \cite{schn}. We prove that the cohomology $H^t({\mathfrak X},{\mathcal V}_{{\mathcal O}_K})$ vanishes for $t>0$, for ${\mathcal V}_{{\mat…

某些仿射三次曲面的Brauer群

Brauer groups of certain affine cubic surfaces

该研究针对特征0域上光滑三次曲面奇异超平面截面的补仿射曲面，确定了代数闭包上其Brauer群的Galois模结构，给出三线并截面对应的2、3阶超越元有理数域实例，并应用于整Hasse原理的整Brauer-Manin障碍研究。