On Probalistic Commutative Spaces.
On Riemannian 3-manifolds with distinct constant Ricci eigenvalues.
Curvature tensors in dimension four which do not belong to any curvature homogeneous space
A six-parameter family is constructed of (algebraic) Riemannian curvature tensors in dimension four which do not belong to any curvature homogeneous space. Also a general method is given for a possible extension of this result.
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