“…Rodionov, O.P. Khromova for the one-dimensional curvature operator and the sectional curvature operator in the case of three-dimensional Lie groups with left-invariant Riemannian metrics [5,6].…”
The main purpose of this paper is to determine the admissible forms of the sectional curvature operator on a three-dimensional locally homogeneous Lorentzian manifolds.
“…Rodionov, O.P. Khromova for the one-dimensional curvature operator and the sectional curvature operator in the case of three-dimensional Lie groups with left-invariant Riemannian metrics [5,6].…”
The main purpose of this paper is to determine the admissible forms of the sectional curvature operator on a three-dimensional locally homogeneous Lorentzian manifolds.
“…This paper continues [3], where the spectra of curvature operators on three dimensional Lie groups with a left invariant Riemannian metric were considered.…”
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