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arXiv 1005.2835math.GRmath.AGmath.ATmath.DG
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关于Kaehler群的上同调

On the cohomology of Kaehler groups

Bruno Klingler

摘要:

这是几何的一部分,两篇论文的上同调的Kaehler群。利用非阿贝尔Hodge理论,证明了如果一个具有无界复线性态射的群是紧致Kaehler流形的基本群,则它的第二或第四贝蒂数不为零.结合我们的第一篇文章,本文证明了实秩足够大的实单李群G中的余紧格是Kaehler当且仅当G是Hermitian型(Carlson和Toledo的一个猜想).

英文摘要:

This is the geometric part of two papers on the cohomology of Kaehler groups. Using non-Abelian Hodge theory we show that if a finitely presented group with an unbounded complex linear morphism is the fundamental group of a compact Kaehler manifold then its second or its fourth Betti number does not vanish. Combined with our first paper this shows that a cocompact lattice in a real simple Lie group G of sufficiently large real rank is Kaehler if and only if G is of Hermitian type (a conjecture of Carlson and Toledo).

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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