On Conformally flat homogeneous Walker four-manifolds
In this paper we study the invariant Walker structures over the conformally flat four-dimensional homogeneous manifolds according to the Seger types of the Ricci operator.
math.DG↗
arXiv subjects
M. Chaichi
Publications and source records attributed to M. Chaichi.
On Lorentzian two-symmetric manifolds of dimension four
We study curvature properties of four-dimensional Lorentzian manifold with two-symmetry property. We then consider Einstein-like metrics, Ricci solitons and homogeneity over these spaces.
math.DG↗