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Displaying 61 – 79 of 79

On tensor fields semiconjugated with torse-forming vector fields

Lukáš Rachůnek, Josef Mikeš (2005)

Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica

The paper deals with tensor fields which are semiconjugated with torse-forming vector fields. The existence results for semitorse-forming vector fields and for convergent vector fields are proved.

On the Bianchi Identities.

Ravindra S. Kulkarni (1972)

Mathematische Annalen

On the Covariant Differential of an Almost Hermitian Structure.

J.M. Terrier (1975)

Commentarii mathematici Helvetici

On the equivalence of Ricci-semisymmetry and semisymmetry

Kadri Arslan, Yunus Çelik, Ryszard Deszcz, Ridvan Ezentaş (1998)

Colloquium Mathematicae

On the equivalence of the Ricci-pseudosymmetry and pseudosymmetry

Ryszard Deszcz, Marian Hotloś, Zerrin Şentürk (1999)

Colloquium Mathematicae

On the Example of Almost Pseudo-Z-symmetric Manifolds

Kanak Kanti Baishya, Patrik Peška (2016)

Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica

In the present paper we have obtained a new example of non-Ricci-flat almost pseudo-Z-symmetric manifolds in the class of equidistant spaces, which admit non-trivial geodesic mappings.

On the existence of certain conformally recurrent metrics

W. Roter (1987)

Colloquium Mathematicae

On the existence of certain types of Riemannian metrics

Wiesław Grycak, Marian Hotloś (1982)

Colloquium Mathematicae

On the motion of a non-homogeneous ideal incompressible fluid in an external force field

Hugo Beirão da Veiga, Alberto Valli (1978)

Rendiconti del Seminario Matematico della Università di Padova

On the nullity index of isometric immersions of Kähler manifolds

M. J. Ferreira, R. Tribuzy (2001)

Rendiconti del Seminario Matematico della Università di Padova

On the quasi-conformal curvature tensor of a Kenmotsu manifold.

Özgür, Cihan, De, Uday Chand (2006)

Mathematica Pannonica

On the rectilinear extremals of geodesics in $S o l$ geometry.

Bácsó, Sándor, Szilágyi, Brigitta (2008)

Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]

On the reduction formulas

G. Łubczonok (1976)

Annales Polonici Mathematici

On the Riemannian curvature tensor of an almost-product manifold

Francisco J. Carreras (1986)

Czechoslovak Mathematical Journal

On the symmetry classes of the first covariant derivatives of tensor fields.

Fiedler, Bernd (2002)

Séminaire Lotharingien de Combinatoire [electronic only]

On totally umbilical surfaces in some Riemannian spaces

Z. Olszak (1977)

Colloquium Mathematicae

On weakly and pseudo concircular symmetric structures on a Riemannian manifold

Füsun Özen Zengin, Sezgin Altay Demirbag (2008)

Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica

In this paper, we examine the properties of hypersurfaces of weakly and pseudo concircular symmetric manifolds and we give an example for these manifolds.

On Weakly $W_{3}$ -Symmetric Manifolds

Shyamal Kumar Hui (2011)

Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica

The object of the present paper is to study weakly $W_{3}$ -symmetric manifolds and its decomposability with the existence of such notions. Among others it is shown that in a decomposable weakly $W_{3}$ -symmetric manifold both the decompositions are weakly Ricci symmetric.

Optimal inequalities characterising quasi-umbilical submanifolds.

Decu, Simona, Haesen, Stefan, Verstraelen, Leopold (2008)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]

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