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arXiv 1004.4381math.RTmath.CV
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Stein流形与紧李群的无重数表示

Stein manifolds and multiplicity-free representations of compact Lie groups

Dmitri Akhiezer

摘要:

本文综述了几何表示论在描述群作用中诱导全纯函数空间中的无重数表示的最新结果。对于Stein流形的自同构的连通紧李群,我们用反全纯对合刻画了这种作用。文中给出了一些证明,并得到了一些新的结果.例如,球面复空间被定义为复还原群的任意实形式。我们在这里证明的它们的性质,只在紧实型中才知道。我们还证明了复约化群的复紧致齐次流形是球面的当且仅当其Tits纤维化的纤维是复环面。

英文摘要:

The paper is a survey of recent results in geometric representation theory describing group actions which induce multiplicity-free representations in the spaces of holomorphic functions. For connected compact Lie groups of automorphisms of Stein manifolds we characterize such actions in terms of antiholomorphic involutions. Some proofs are given and some results are new. For example, spherical complex spaces are defined for arbitrary real forms of complex reductive groups. Their properties, which we prove here, were known only for compact real forms. We also show that a complex compact homogeneous manifold of a complex reductive group is spherical if and only if the fiber of its Tits fibration is a complex torus.

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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