Results 101 to 110 of about 4,274 (159)

On locally phi-semisymmetric Sasakian manifolds

open access: yes, 2013
20 pages, Any suggestion and comments are ...
SHAİKH, Absos Ali   +2 more
openaire   +4 more sources

On Sectional Curvatures of (ε)-Sasakian Manifolds

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
We obtain some basic results for Riemannian curvature tensor of (ε)-Sasakian manifolds and then establish equivalent relations among φ-sectional curvature, totally real sectional curvature, and totally real bisectional curvature for (ε)-Sasakian ...
Rakesh Kumar   +2 more
doaj   +1 more source

A General Type of Almost Contact Manifolds [PDF]

open access: yes
Among almost contact manifolds Sasakian manifolds, Kenmotsu manifolds (called also “a certain class of almost contact manifolds”) and cosymplectic manifolds have been studied by many authors.
Catalin Angelo Ioan
core   +1 more source

Ambient constructions for Sasakian η-Einstein manifolds [PDF]

open access: yesAdvances in Mathematics, 2018
The theory of ambient spaces is useful to define CR invariant objects, such as CR invariant powers of the sub-Laplacian, the $P$-prime operators, and $Q$-prime curvature. However in general, it is difficult to write down these objects in terms of the Tanaka-Webster connection.
openaire   +2 more sources

Complex Structures on some Stiefel Manifolds

open access: yes, 2000
We discuss conditions for the integrability of an almost complex structure defined on the total space of an induced Hopf S^3-bundle over a Sasakian manifold .
Ornea, Liviu, Piccinni, Paolo
core   +1 more source

Ricci Solitons in (ε,δ)-Trans-Sasakian Manifolds

open access: yesInternational Journal of Analysis and Applications, 2017
We study Ricci solitons in (ε,δ)-trans-Sasakian manifolds. It is shown that a symmetric parallel second order covariant tensor in a (ε,δ)-trans-Sasakian manifold is a constant multiple of the metric tensor.
C.S. Bagewadi, Gurupadavva Ingalahalli
doaj   +2 more sources

Differentiable Manifolds and Geometric Structures

open access: yesMathematics
This editorial presents 26 research articles published in the Special Issue entitled Differentiable Manifolds and Geometric Structures of the MDPI Mathematics journal, which covers a wide range of topics particularly from the geometry of (pseudo ...
Adara M. Blaga
doaj   +1 more source

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