On the Non-existence of Certain Types of Weakly Symmetric Manifold
DOI:
https://doi.org/10.5644/SJM.02.2.09Keywords:
Weakly symmetric manifold, quasi Einstein manifold, conformally flat Riemannian manifoldAbstract
An expression for the curvature tensor of a weakly symmetric manifold is obtained. Next it is shown that an Einstein weakly symmetric manifold of dimension $>2$ does not exist. Further it is proved that a conformally flat weakly symmetric manifold of dimension $>3$ is a quasi Einstein manifold. Finally a couple of results on conformally flat weakly symmetric manifold are presented.
2000 Mathematics Subject Classification. 53B35, 53B05
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References
M. C. Chaki, On pseudo symmetric manifolds, An. Stiint. Univ. Al. I. Cuza, 33 (1987), 53–58.
M. C. Chaki, On generalised pseudo symmetric manifolds, Publ. Math., 45 (1994), 305–312.
M. C. Chaki and R. K. Maity, On quasi Einstein manifolds, Publ. Math., 57 (2000), 297–306.
M. C. Chaki and S. P. Mondal, On generalised pseudo symmetric manifolds, Publ. Math., 51 (1997), 35–42.
U. C. De and S. Bandyopadhyay, On weakly symmetric spaces, Publ. Math., 54 (1997), 377–381.
M. Prvanovi´c, On weakly symmetric Riemannian manifolds, Publ. Math., 46 (1995), 19–25.
B. L.Tamassay and T. Q. Binh, On weakly symmetric and weakly projective symmetric Riemannian manifolds, Colloq. Math. Soc. J´anos Bolyai, 50 (1989), 663–670.
K. Yano, Integral Formulas in Riemannian Geometry, Marcel Dekker, New York, (1970).