Results 31 to 40 of about 672 (132)

SEMI-SLANT SUBMANIFOLDS OF T-MANIFOLDS

open access: yesDemonstratio Mathematica, 2006
\(T\)--manifolds are a generalization of cosymplectic manifolds whose study was introduced by \textit{D. E. Blair} [J. Differ. Geom. 4, 155--167 (1970; Zbl 0202.20903)]. Semi-slant submanifolds are a generalization of CR-submanifolds. As indicated by the title of this paper, the authors investigate semi-slant submanifolds of a \(T\)--manifold.
Khan, V. A., Khan, M. A.
openaire   +1 more source

Pseudo-Slant submaniolds of nearly δ- Lorentzian trans Sasakian manifolds [PDF]

open access: yesJournal of Hyperstructures
Our focus is on the existence of certain structures and similarities between pseudo slant submanifolds and nearly δ- Lorentzian trans Sasakian manifolds.
Shamsur Rahman
doaj   +1 more source

Inequality for Ricci curvature of certain submanifolds in locally conformal almost cosymplectic manifolds

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We establish inequalities between the Ricci curvature and the squared mean curvature, and also between the k-Ricci curvature and the scalar curvature for a slant, semi-slant, and bi-slant submanifold in a locally conformal almost cosymplectic manifold ...
Dae Won Yoon
doaj   +1 more source

Geometric Mechanics on Warped Product Semi-Slant Submanifold of Generalized Complex Space Forms

open access: yesAdvances in Mathematical Physics, 2021
In this study, we develop a general inequality for warped product semi-slant submanifolds of type Mn=NTn1×fNϑn2 in a nearly Kaehler manifold and generalized complex space forms using the Gauss equation instead of the Codazzi equation.
Yanlin Li, Ali H. Alkhaldi, Akram Ali
doaj   +1 more source

CHARACTERIZATIONS OF CONTACT PSEUDO-SLANT SUBMANIFOLDS OF A PARA-KENMOTSU MANIFOLD

open access: yesJournal of Amasya University the Institute of Sciences and Technology, 2022
In this paper, the geometry of contact pseudo-slant submanifolds of a para Kenmotsu manifoldhowe been studied. The necessary and sufficient conditions for a submanifolds to be a contact pseudoslantsubmanifolds of a para Kenmotsu manifold are given.
Ümit Yıldırım, Süleyman Dirik
doaj   +1 more source

Geometry of CR-Slant Warped Products in Nearly Kaehler Manifolds

open access: yesMathematics, 2023
Recently, we studied CR-slant warped products B1×fM⊥, where B1=MT×Mθ is the Riemannian product of holomorphic and proper slant submanifolds and M⊥ is a totally real submanifold in a nearly Kaehler manifold. In the continuation, in this paper, we study B2×
Siraj Uddin, Bang-Yen Chen, Rawan Bossly
doaj   +1 more source

Slant Submanifolds in Complex Euclidean Spaces

open access: yesTokyo Journal of Mathematics, 1991
An immersion of a differentiable manifold into an almost Hermitian manifold is called a slant immersion if it has constant Wirtinger angle. The authors prove that every slant immersion of a compact manifold into complex Euclidean space is totally real.
CHEN, Bang-Yen, TAZAWA, Yoshihiko
openaire   +2 more sources

Generalized Wintgen inequality for BI-SLANT submanifolds in conformal Sasakian space form with quarter-symmetric connection [PDF]

open access: yesArab Journal of Mathematical Sciences
Purpose – In 1979, P. Wintgen obtained a basic relationship between the extrinsic normal curvature the intrinsic Gauss curvature, and squared mean curvature of any surface in a Euclidean 4-space with the equality holding if and only if the curvature ...
Mohd Aslam   +2 more
doaj   +1 more source

The Geometry Of Hemi-Slant Submanifolds of a Locally Product Riemannian Manifold

open access: yes, 2014
In the present paper, we study hemi-slant submanifolds of a locally product Riemannian manifold. We prove that the anti-invariant distribution which is involved in the definition of hemi-slant submanifold is integrable and give some applications of this ...
Taştan, Hakan Mete, Özdemir, Fatma
core   +1 more source

Improved Chen’s Inequalities for Submanifolds of Generalized Sasakian-Space-Forms

open access: yesAxioms, 2022
In this article, we derive Chen’s inequalities involving Chen’s δ-invariant δM, Riemannian invariant δ(m1,⋯,mk), Ricci curvature, Riemannian invariant Θk(2≤k≤m), the scalar curvature and the squared of the mean curvature for submanifolds of generalized ...
Yanlin Li   +3 more
doaj   +1 more source

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