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arXiv 2203.01768math.NTmath.AGmath.RT
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相对设置下Langlands参数的Jacobson–Morozov态射

The Jacobson--Morozov morphism for Langlands parameters in the relative setting

Alexander Bertoloni Meli, Naoki Imai, Alex Youcis

AI总结:

本文在相对设置下构造了SL₂-参数模空间与Jacobson–Morozov态射,证明其几何性质良好,并建立了与Weil–Deligne参数模空间在稠密开集、离散轨迹及Frobenius半单等价类层面的同构与双射关系。

摘要:

我们构造了一个定义在有理数域$\u211a$上的$\mathrm{SL}_2$-参数模空间$\mathsf{LP}_G$,并证明其具有良好的几何性质(例如几何连通分支可被显式参数化且空间光滑)。我们构造了一个Jacobson–Morozov态射$\mathsf{JM}\colon \mathsf{LP}_G\to\mathsf{WDP}_G$(其中$\mathsf{WDP}_G$是若干其他作者所考虑的Weil–Deligne参数模空间)。我们证明$\mathsf{JM}$在$\mathsf{WDP}_G$的一个稠密开集上是同构,它诱导离散轨迹之间的同构$\mathsf{LP}^{\mathrm{disc}}_G\to\mathsf{WDP}_G^{\mathrm{disc}}$,并且对任意$\mathbb{Q}$-代数$A$,它诱导$\mathsf{LP}_G(A)$中Frobenius半单等价类与$\mathsf{WDP}_G(A)$中具有常值(在共轭意义下)单值算子的Frobenius半单等价类之间的双射。

英文摘要:

We construct a moduli space $\mathsf{LP}_G$ of $\mathrm{SL}_2$-parameters over $\mathbb{Q}$, and show that it has good geometric properties (e.g. explicitly parametrized geometric connected components and smoothness). We construct a Jacobson--Morozov morphism $\mathsf{JM}\colon \mathsf{LP}_G\to\mathsf{WDP}_G$ (where $\mathsf{WDP}_G$ is the moduli space of Weil--Deligne parameters considered by several other authors). We show that $\mathsf{JM}$ is an isomorphism over a dense open of $\mathsf{WDP}_G$, that it induces an isomorphism between the discrete loci $\mathsf{LP}^{\mathrm{disc}}_G\to\mathsf{WDP}_G^{\mathrm{disc}}$, and that for any $\mathbb{Q}$-algebra $A$ it induces a bijection between Frobenius semi-simple equivalence classes in $\mathsf{LP}_G(A)$ and Frobenius semi-simple equivalence classes in $\mathsf{WDP}_G(A)$ with constant (up to conjugacy) monodromy operator.

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。

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