Generalized Symmetric Spaces Generalized symmetric riemannian spaces Reductive spaces Differentiable s manifolds Locally regular s manifolds Operations with s manifolds Distinguished s structures on generalized symmetric spaces The classification of generalized symmetric Riemannian spaces in low dimensions The classification of generalized affine symmetric spaces in low dimensions Existence of generalized symmetric spaces of solvable type Irreducible generalized affine symmetric spaces Generalized pointwise symmetric spaces Non parallel s structures on symmetric spaces Some advanced results.