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arXiv math/0011238math.GTmath.GR
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可缩流形上格的真作用

Proper actions of lattices on contractible manifolds

Mladen Bestvina, Mark Feighn

摘要:

连通半单李群G中的每个格H通过等距作用在可收缩流形G/K(K是G的极大紧子群)上。本文证明了:如果H作用在可收缩流形W上,且1)作用是真不连续的,或2)W具有完备的黎曼度量,作用是等距的且轨道是无界的,G是有限中心单的且秩>1,则dim W不小于dim G/K.

英文摘要:

Every lattice H in a connected semi-simple Lie group G acts properly discontinuously by isometries on the contractible manifold G/K (K a maximal compact subgroup of G). We prove that if H acts on a contractible manifold W and if either 1) the action is properly discontinuous, or 2) W is equipped with a complete Riemannian metric, the action is by isometries and with unbounded orbits, G is simple with finite center and rank >1, then dim W is not less than dim G/K.

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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