COMMUTATIVE CURVATURE OPERATORS OVER FOUR-DIMENSIONAL GENERALIZED SYMMETRIC SPACES

Commutative properties of four-dimensional general- ized symmetric pseudo-Riemannian manifolds were considered. Spe- cially, in this paper, we studied Skew-Tsankov and Jacobi-Tsankov conditions in 4-dimensional pseudo-Riemannian generalized sym- metric manifolds.