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arXiv math/0007143math.DGmath.RT
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具有单isometry群的齐次Lorentz流形

Homogeneous Lorentz manifolds with simple isometry group

Dave Witte

摘要:

设H是单李群G的闭非紧子群,使得G/H容许不变的Lorentz度量.证明了若G = SO(2,n),n > 2,则H的单位连通区与SO(1,n)的单位连通区共轭.同样,如果G = SO(1,n),其中n > 2,则H的单位连通区与SO(1,n-1)的单位连通区共轭。

英文摘要:

Let H be a closed, noncompact subgroup of a simple Lie group G, such that G/H admits an invariant Lorentz metric. We show that if G = SO(2,n), with n > 2, then the identity component of H is conjugate to the identity component of SO(1,n). Also, if G = SO(1,n), with n > 2, then the identity component of H is conjugate to the identity component of SO(1,n-1).

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