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arXiv 0812.1078math.RTmath.DG
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Dynkin图的开轨与增广

Open Orbits and Augmentations of Dynkin Diagrams

Sin Tsun Edward Fan, Naichung Conan Leung

摘要:

给定复线性约化李群G_0的任意表示V,我们证明了一个较大的半单李群G(g=g_0 + V + V* +.)当V具有有限个G_0-轨道时,存在一个精确的G_0-轨道。特别地,V允许一个开的G_0-轨道.此外,这对应于g_0的Dynkin图的扩充。表示论的g应该是有用的描述几何流形与稳定的形式研究希钦。

英文摘要:

Given any representation V of a complex linear reductive Lie group G_0, we show that a larger semi-simple Lie group G with g=g_0 + V + V* + ..., exists precisely when V has a finite number of G_0-orbits. In particular, V admits an open G_0-orbit. Furthermore, this corresponds to an augmentation of the Dynkin diagram of g_0. The representation theory of g should be useful in describing the geometry of manifolds with stable forms as studied by Hitchin.

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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