形式联络(或 Higgs 场)的 Parahoric 约化理论
Parahoric reduction theory of formal connections (or Higgs fields)
AI总结:
本文建立带 parahoric 结构形式主丛上形式联络或 Higgs 场的 parahoric 约化理论,推广已有结果,并给出正则奇点定义等价性、相对正则性判据及 Frenkel–Zhu Borel 约化定理的 parahoric 版本。
摘要:
本文在带有 parahoric 结构的形式主丛上建立了形式联络(或 Higgs 场)的 parahoric 约化理论,推广了 Babbitt–Varadarajan 关于无 parahoric 结构情形的结果[5],以及 Boalch 关于正则奇点情形的结果[9]。作为应用,我们证明了形式联络正则奇点的外在定义与内在定义的等价性,给出了相对正则性的判据,并展示了 Frenkel–Zhu 形式联络 Borel 约化定理的 parahoric 版本[23]。
英文摘要:
In this paper, we establish the parahoric reduction theory of formal connections (or Higgs fields) on a formal principal bundle with parahoric structures, which generalizes Babbitt-Varadarajan's result for the case without parahoric structures [5] and Boalch's result for the case of regular singularity [9]. As applications, we prove the equivalence between extrinsic definition and intrinsic definition of regular singularity and provide a criterion of relative regularity for formal connections, and also demonstrate a parahoric version of Frenkel-Zhu's Borel reduction theorem of formal connections [23].
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