On the equivalence of Ricci-semisymmetry and semisymmetry
Kadri Arslan, Yunus Çelik, Ryszard Deszcz, Ridvan Ezentaş (1998)
Colloquium Mathematicae
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Kadri Arslan, Yunus Çelik, Ryszard Deszcz, Ridvan Ezentaş (1998)
Colloquium Mathematicae
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Ryszard Deszcz, Małgorzata Głogowska, Jan Jełowicki, Miroslava Petrović-Torgašev, Georges Zafindratafa (2013)
Publications de l'Institut Mathématique
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Ryszard Deszcz, Małgorzata Głogowska, Hideko Hashiguchi, Marian Hotloś, Makoto Yawata (2013)
Colloquium Mathematicae
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We investigate semi-Riemannian manifolds with pseudosymmetric Weyl curvature tensor satisfying some additional condition imposed on their curvature tensor. Among other things we prove that the so-called Roter type equation holds on such manifolds. We present applications of our results to hypersurfaces in semi-Riemannian space forms, as well as to 4-dimensional warped products.
Uday Chand De, Prajjwal Pal (2014)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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The object of the present paper is to study almost pseudo-Z-symmetric manifolds. Some geometric properties have been studied. Next we consider conformally flat almost pseudo-Z-symmetric manifolds. We obtain a sufficient condition for an almost pseudo-Z-symmetric manifold to be a quasi Einstein manifold. Also we prove that a totally umbilical hypersurface of a conformally flat () is a manifold of quasi constant curvature. Finally, we give an example to verify the result already obtained...
Deszcz, R. (1996)
Publications de l'Institut Mathématique. Nouvelle Série
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Ryszard Deszcz (1991)
Colloquium Mathematicae
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Haesen, Stefan, Verstraelen, Leopold (2009)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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M. J. Ferreira, R. Tribuzy (2001)
Rendiconti del Seminario Matematico della Università di Padova
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