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Zbl 1025.53040
Duggal, K.L.
Constant scalar curvature and warped product globally null manifolds. (English)
[J] J. Geom. Phys. 43, No.4, 327-340 (2002). ISSN 0393-0440

The author describes an infinite family of light-like warped products of the form $M= L \times b \times_f F$ ($B$ being a Riemann surface and $F=(a, b)$ -- an open interval) of dimension $4$ and constant scalar curvature.
[Pawel Walczak (Dijon)]
MSC 2000:
*53C50 Lorentz manifolds, manifolds with indefinite metrics
53B30 Lorentz metrics, indefinite metrics
53C20 Riemannian manifolds (global)

Keywords: Lorentz geometry; warped product; scalar curvature

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