Abstract.
The above title is the same, but with “semisimple” instead of “simple,” as that of a notice by Nadine Kowalsky. There, she announced many theorems on the subject of actions of simple Lie groups preserving a Lorentz structure. Unfortunately, she published proofs for essentially only half of the announced results before her premature death. Here, using a different, geometric approach, we generalize her results to the semisimple case, and give proofs of all her announced results.
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Received: May 2006, Revision: February 2007, Accepted: March 2007
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Deffaf, M., Melnick, K. & Zeghib, A. Actions of Noncompact Semisimple Groups on Lorentz Manifolds. GAFA Geom. funct. anal. 18, 463–488 (2008). https://doi.org/10.1007/s00039-008-0659-6
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DOI: https://doi.org/10.1007/s00039-008-0659-6