Results 91 to 100 of about 2,167 (137)

On nearly Sasakian and nearly cosymplectic manifolds

open access: yes, 2017
We prove that every nearly Sasakian manifold of dimension greater than five is Sasakian. This provides a new criterion for an almost contact metric manifold to be Sasakian.
DILEO, GIULIA   +7 more
core   +1 more source

Studies on Sasakian, Lorentzian para (LP)-Sasakian manifold and other related manifolds

open access: yes, 2007
Ph.d ThesisThe study of tensors in differentiable manifolds that vary in structure have attracted many researchers. In this thesis out of many newly defined tensors W2 -curvature tensor and W4 -curvature tensor have been studied in Sasaki an, Para ...
Moindi, Stephen Kibet
core  

CERTAIN CURVES IN TRANS-SASAKIAN MANIFOLDS [PDF]

open access: yes, 2016
. In the present paper, biharmonic almost contact curves with respect to generalized Tanaka WebsterOkumura connections have been studied on three-dimensional trans-Sasakian manifolds.
Mondal, Ashis, Sarkar, Avijit
core  

On the geometry of Lorentzian Sasakian manifolds

open access: yes
Bu tezde Lorentzian Sasakian manifoldlarını, bu manifoldların eğrilik tensörlerini ve pseudoparalel altmanifoldlarını araştırdık. Bu tez beş bölümden oluşmaktadır.
Altay, Beyda Nur
core  

On a type of trans-Sasakian manifolds

open access: yes, 2017
The object of the present paper is to study 3-dimensional trans-Sasakian manifolds admitting a W2-curvature tensor.
De, Krishnendu
core  

Lightlike hypersurfaces of an $(\epsilon)$-para Sasakian manifold

open access: yes, 2014
In this paper, we initiate the study of lightlike hypersurfaces of an $(\epsilon)$-almost paracontact metric manifold which are tangent to the structure vector field. In particular, we give definitions of invariant lightlike hypersurfaces and screen semi-invariant lightlike hypersurfaces, and give some examples.
Perktaş, Selcen Yüksel   +2 more
openaire   +1 more source

Characterization of Sasakian manifolds

open access: yes
Weak contact metric manifolds, i.e., the linear complex structure on the contact distribution is replaced by a nonsingular skew-symmetric tensor, defined by the author and R. Wolak, allowed us to take a new look at the theory of contact manifolds.
Rovenski, Vladimir
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$n$-Sasakian manifolds

open access: yes, 2008
We define a new class of manifolds called $n$-Sasakian manifolds that enjoy remarkable geometric properties. We furnish examples of such manifolds and make links to the study of isoparametric hypersurfaces.
Dearricott, Owen
core  

On three-dimensional trans-Sasakian manifolds

open access: yes, 2008
The object of the present paper is to study 3-dimensional trans-Sasakian manifolds which are locally Á-symmetric and have ´-parallel Ricci tensor. Also 3-dimensional trans- Sasakian manifolds of constant curvature have been considered.
De, U. C.   +2 more
core  

Ricci Solitons on Para-Sasakian Manifolds

open access: yesIOSR Journal of Mathematics, 2016
Balachandra S. Hadimani, D. G. Prakasha
openaire   +1 more source

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