Cohomogeneity one de Sitter space S

Ahmadi, P.; Kashani, S.; Abedi, H.
October 2010
Acta Mathematica Sinica;Oct2010, Vol. 26 Issue 10, p1915
Academic Journal
In this paper we study the cohomogeneity one de Sitter space S. We consider the actions in both proper and non-proper cases. In the first case we characterize the acting groups and orbits and we prove that the orbit space is homeomorphic to ℝ. In the latter case we determine the groups and consequently the orbits in some different cases and prove that the orbit space is not Hausdorff.


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