The words contained in this file might help you see if this file matches what you are looking for:

...Reductive homogeneous pseudo riemannian manifolds by pedro m gadea and jos e a oubin abstract classication of structures characteri zation each primitive class are obtained several examples also given introduction ambrose singer gave characterization connected simply completehomogeneousriemannianmanifoldsintermsofa tensorelds ontheman ifold this extends the one cartan symmetric spaces has permitted tricerri vanhecke to classify those into eight classes which dened invariant subspaces certain space s in it is proved that complete manifold admits nonvanishing struc ture type if only isometric hyperbolic structure naturally we have generalized case any signature pseu do note every present paper rst give for similar then suppose g i prove nondegenerate either positive denite metric constant negative curva or curvature moreover see nonat forms arbitrary admit locally nonde generate degenerate studied montesinos amilibia ms c key words ii as although authors lot rie mannian there not far kno...