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arXiv 1004.4411math.AG
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非正则奇异联络的模空间

Moduli spaces of irregular singular connections

Christopher L. Bremer, Daniel S. Sage

摘要:

在朗兰兹对应的几何版本中,非正则奇点连接扮演着带有野生分支的伽罗瓦表示的角色。本文发展了一个基本层的几何理论,用以研究射影直线上的不规则奇异联络。基本地层最初用于分类局部域上的一般线性群的尖点表示。在几何学背景下,基本层起着联系的首项的作用。我们引入了正则层的概念,它使我们能够推广的条件,一个连接有正则半单首项的连接与非整数斜率。最后,我们构造了射影线上亚纯联络的辛模空间,该空间在每个奇点处包含正则层。

英文摘要:

In the geometric version of the Langlands correspondence, irregular singular point connections play the role of Galois representations with wild ramification. In this paper, we develop a geometric theory of fundamental strata to study irregular singular connections on the projective line. Fundamental strata were originally used to classify cuspidal representations of the general linear group over a local field. In the geometric setting, fundamental strata play the role of the leading term of a connection. We introduce the concept of a regular stratum, which allows us to generalize the condition that a connection has regular semisimple leading term to connections with non-integer slope. Finally, we construct a symplectic moduli space of meromorphic connections on the projective line that contain a regular stratum at each singular point.

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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