Results 61 to 70 of about 220,418 (211)

Extension of Almost Contact Structure ( ϕ_4,ξ_4,η_4) on (Ν^(4n+3)⨂R^d)≅ M^(5n+4)

Ganeshman Darpan
A prior research of almost contacts on 1, 2, and 3-manifolds has been partially investigated. On the other hand, the existence and geometry of a virtually contact 4-structure are poorly understood.
Nand Kishor Kumar
semanticscholar   +1 more source

GRAY CURVATURE IDENTITIES FOR ALMOST CONTACT METRIC MANIFOLDS [PDF]

Journal of the Korean Mathematical Society, 2010
The aim of this research is the study of Gray curvature identities, introduced by Alfred Gray in \cite{kn:Gra76} for the class of almost hermitian manifolds. As known till now, there is no equivalent for the class of almost contact manifolds. For this purpose we use the Boohby-Wang fibration and the warped manifolds construction in order to establish ...
Mocanu, Raluca, Munteanu, Marian Ioan
openaire   +2 more sources

The differential geometry of almost Hermitian almost contact metric submersions

International Journal of Mathematics and Mathematical Sciences, 2004
Three types of Riemannian submersions whose total space is an almost Hermitian almost contact metric manifold are studied. The study is focused on fundamental properties and the transference of structures.
T. Tshikuna-Matamba
doaj   +1 more source

Certain investigations of sequential warped product submanifolds on cosymplectic manifolds

Journal of Inequalities and Applications, 2023
In a special class of almost contact metric manifolds known as cosymplectic manifolds, the current study aims to establish the existence result and a few inequalities for sequential warped product submanifolds.
Anil Sharma, Anuj Kumar, Nasser Bin Turki, Sameh Shenawy   +3 more
doaj   +1 more source

Almost contact B-metric manifolds with curvature tensors of K\"ahler type [PDF]

, 2012
On 5-dimensional almost contact B-metric manifolds, the form of any K\"ahler-type tensor (i.e. a tensor satisfying the properties of the curvature tensor of the Levi-Civita connection in the special class of the parallel structures on the manifold) is ...
Ivanova, Miroslava, Manev, Mancho
core  

A new curvaturelike tensor field in an almost contact Riemannian manifold II

, 2018
In the last paper, we introduced a new curvaturlike tensor field in an almost contact Riemannian manifold and we showed some geometrical properties of this tensor field in a Kenmotsu and a Sasakian manifold.
Koji Matsumoto
semanticscholar   +1 more source

Contact CR-Submanifolds of Kenmotsu Manifolds [PDF]

, 2011
2000 Mathematics Subject Classification: 53C15, 53C42.In this paper, we research some fundamental properties of contact CR-Submanifolds of a Kenmotsu manifold.
Atçeken, Mehmet
core  

Pair of Associated η-Ricci–Bourguignon Almost Solitons with Generalized Conformal Killing Potential on Sasaki-like Almost Contact Complex Riemannian Manifolds

Mathematics
The subject of this study is almost contact complex Riemannian manifolds, also known as almost contact B-metric manifolds. The considerations are restricted to a special class of these manifolds, namely those of the Sasaki-like type, because of their ...
Mancho Manev
doaj   +1 more source

Geometric Decompositions of Almost Contact Manifolds

, 2014
30 pages, 2 ...
openaire   +2 more sources

Slant submanifolds of lorentzian almost contact manifolds

, 2012
8 ...
Singh, Khushwant, Uddin, Siraj, Singh Bhatia, Satvinder, Khan, Meraj Ali   +3 more
openaire   +3 more sources