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math.AG2024
The Picard group of the Baily--Borel compactification of the moduli space of quasi-polarized K3 surfaces and generalizations
Chenxin Huang, Zhiyuan Li, Manuel K. -H. Müller +1
In this paper, we investigate the Picard group of the Baily--Borel compactification of orthogonal Shimura varieties. As a key result, we determine the Picard group of the Baily--Bo…
math.AG2024
On Special Subvarieties of the Universal Semi-abelian Scheme and Zilber--Pink Conjectures
Kaiyuan Gu, Chenxin Huang
We classify the special subvarieties of the universal semi-abelian scheme of arbitrary toric rank, viewed as a mixed Shimura variety. As an application, we show that the Zilber--Pi…