COHOMOGENEITY ONE ACTIONS ON SOME NONCOMPACT SYMMETRIC SPACES OF RANK TWO

摘要

We classify, up to orbit equivalence, the cohomogeneity one actions on the noncompact Riemannian symmetric spaces of rank two G(2)(C)/G(2), SL3(C)/SU3 and SO2,n+20 /SO2SOn+2, n >= 1.