arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2408.01348math.NTmath.AG
收藏

Igusa叠与志村簇的上同调

Igusa Stacks and the Cohomology of Shimura Varieties

Skidmore College(斯基德莫尔学院);Zhejiang University(浙江大学);Stanford University(斯坦福大学);Princeton University(普林斯顿大学)

Patrick Daniels, Pol van Hoften, Dongryul Kim, Mingjia Zhang

AI总结:

本文针对所有Hodge型志村簇构造函子性Igusa叠,依托该构造及Fargues-Scholze谱作用证明其与半单局部朗兰兹对应的相容性,还在紧合情形得到新的上同调挠消失结果。

摘要:

我们为所有Hodge型志村簇构造了函子性的Igusa叠,证明了Scholze的一个猜想,并推广了第四作者此前针对PEL型志村簇得到的结果。利用该Igusa叠,我们在$\mathrm{Bun}_G$上构造了一个层,它控制着对应志村簇的上同调。我们借助这个层以及Fargues-Scholze的谱作用,证明了Hodge型志村簇的上同调与Fargues-Scholze半单局部朗兰兹对应之间的相容性,将Blasius-Rogawski的Eichler-Shimura关系推广到了p处的任意水平。当给定的志村簇是紧合的时,我们进一步证明该层是反常层,这使得我们能够证明志村簇上同调的新挠消失结果。

英文摘要:

We construct functorial Igusa stacks for all Hodge-type Shimura varieties, proving a conjecture of Scholze and extending earlier results of the fourth-named author for PEL-type Shimura varieties. Using the Igusa stack, we construct a sheaf on $\mathrm{Bun}_G$ that controls the cohomology of the corresponding Shimura variety. We use this sheaf and the spectral action of Fargues-Scholze to prove a compatibility between the cohomology of Shimura varieties of Hodge type and the semisimple local Langlands correspondence of Fargues-Scholze, generalizing the Eichler-Shimura relation of Blasius-Rogawski to arbitrary level at $p$. When the given Shimura variety is proper, we show moreover that the sheaf is perverse, which allows us to prove new torsion vanishing results for the cohomology of Shimura varieties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑