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arXiv math/0012074math.AG
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U(2,1)表示空间的拓扑

Topology of U(2,1) representation spaces

Peter B. Gothen

摘要:

计算了U(2,1)和SU(2,1)中曲面群的泛中心扩张的表示的模空间的贝蒂数.结果得到使用这些模空间与希格斯包的模空间,和莫尔斯理论,以下希钦的程序的识别。这就需要仔细分析的关键子流形,原来有一个描述使用对称产品的表面或模空间的Bradlow对。

英文摘要:

The Betti numbers of moduli spaces of representations of a universal central extension of a surface group in the groups U(2,1) and SU(2,1) are calculated. The results are obtained using the identification of these moduli spaces with moduli spaces of Higgs bundles, and Morse theory, following Hitchin's programme. This requires a careful analysis of critical submanifolds which turn out to have a description using either symmetric products of the surface or moduli spaces of Bradlow pairs.

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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