LORENTZIAN 3-MANIFOLDS WITH COMMUTING CURVATURE OPERATORS
2008 ◽
Vol 05
(04)
◽
pp. 557-572
◽
Three-dimensional Lorentzian manifolds with commuting curvature operators are studied. A complete description is given at the algebraic level. Consequences are obtained at the differentiable setting for manifolds which additionally are assumed to be locally symmetric or homogeneous.
2008 ◽
Vol 5
(1)
◽
pp. 113-131
◽
2007 ◽
Vol 57
(4)
◽
pp. 1279-1291
◽
2008 ◽
Vol 121
(1-2)
◽
pp. 157-170
◽
2007 ◽
Vol 40
(4)
◽
pp. 831-851
◽
1997 ◽
Vol 38
(2)
◽
pp. 1000-1013
◽