发表机构
Universität Münster(明斯特大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
该研究证明分裂酉Shimura簇基本层上通用阿贝尔簇的自同构群为{±1}(除少数退化情形),类比Oort猜想并计算了通用p-可除群的一般自同构群。
AI 中文摘要
我们证明,在分裂酉Shimura簇的基本层上,除少数退化情形外,带自同构结构和极化的通用阿贝尔簇的自同构群为{±1},这是超奇异阿贝尔簇自同构的Oort猜想的直接类比。过程中,我们明确计算了给定基本同源类中通用p-可除群的一般自同构群。
英文摘要
We prove that generically on the basic stratum of split unitary Shimura varieties, the universal abelian variety with endomorphism structure and polarization has minimal automorphism group in a precise sense, except for a few degenerate cases. This is a direct analogue of Oort's conjecture on automorphisms of supersingular abelian varieties. On the way, we explicitly compute the generic automorphism group of the universal $p$-divisible group in a given basic isogeny class.
Comments25 pages, comments welcome v2: corrected main statement