NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS, vol.68, no.7, pp.2013-2016, 2008 (SCI-Expanded)
The degenerate semi-Riemannian geometry of a Lie group is studied. Then a naturally reductive homogeneous semi-Riemannian space is obtained from the Lie group in a natural way. (c) 2007 Elsevier Ltd. All rights reserved.