Geodesic
Conformally Flat Riemannian Manifolds as Hypersurfaces of the Light Cone
Canadian mathematical bulletin, Tome 32 (1989) no. 3, pp. 281-285

Voir la notice de l'article provenant de la source Cambridge University Press

Simply connected conformally flat Riemannian manifolds are characterized as hypersurfaces in the light cone of a standard flat Lorentzian space, transversal to its generators. Some applications of this fact are given. 
Asperti, A. C.; Dajczer, M. Conformally Flat Riemannian Manifolds as Hypersurfaces of the Light Cone. Canadian mathematical bulletin, Tome 32 (1989) no. 3, pp. 281-285. doi: 10.4153/CMB-1989-041-8
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