Resumen de Cohomogeneity one Minkowski space \R^n_1

P. Ahmadi, S. M. B. Kashani

• In this paper we study cohomogeneity one Minkowski space Rn 1 . Among other results, we prove that the orbit space is homeomorphic to R or [0;1). We show that if there is a spacelike principal orbit, then each of the orbits is spacelike and principal.

  If n = 3 and there is a singular orbit, we characterize the orbits up to isometry, and the acting group up to conjugacy.