Lorentzian homogeneous spaces admitting a homogeneous structure of type T1+T3

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We show that a Lorentzian homogeneous space admitting a homogeneous structure of type T1 + T3 is either a (locally) symmetric space or a singular homogeneous plane wave.
7 pages, Latex2e, a small note and a reference added

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Differential Geometry, High Energy Physics - Theory, 22F30

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http://salesiana.dossiersoluciones.com/handle/123456789/97446

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0504127
 http://arxiv.org/abs/math/0504127
 J.Geom.Phys. 56 (2006) 754-761
 doi:10.1016/j.geomphys.2005.04.016

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arXiv