Geodesic
Characterizations of twisted product manifolds to be warped product manifolds
Acta mathematica Universitatis Comenianae, Tome 82 (2013) no. 2, pp. 253-263 
S. Kazan; B. Sahin; S. Kazan; B. Sahin. Characterizations of twisted product manifolds to be warped product manifolds. Acta mathematica Universitatis Comenianae, Tome 82 (2013) no. 2, pp. 253-263. http://geodesic.mathdoc.fr/item/AMUC_2013_82_2_a9/
@article{AMUC_2013_82_2_a9,
     author = {S. Kazan and B. Sahin and S. Kazan and B. Sahin},
     title = { Characterizations of twisted product manifolds to be warped product manifolds},
     journal = {Acta mathematica Universitatis Comenianae},
     pages = {253--263},
     year = {2013},
     volume = {82},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2013_82_2_a9/}
}
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Voir la notice de l'article provenant de la source Comenius University

In this paper, we give characterizations of a twisted product manifold to be a warped product manifold by imposing certain conditions on the Weyl conformal curvature tensor and the Weyl projective tensor. We also find similar results for multiply twisted product manifolds.