Results 1 to 10 of about 1,021 (98)

Weak Nearly Sasakian and Weak Nearly Cosymplectic Manifolds

open access: yesMathematics, 2023
Weak contact metric structures on a smooth manifold, introduced by V. Rovenski and R. Wolak in 2022, have provided new insight into the theory of classical structures.
Vladimir Rovenski
doaj   +3 more sources

On Nearly Sasakian and Nearly Kähler Statistical Manifolds

open access: yesMathematics, 2023
In this paper, we introduce the notions of nearly Sasakian and nearly Kähler statistical structures with a non-trivial example. The conditions for a real hypersurface in a nearly Kähler statistical manifold to admit a nearly Sasakian statistical ...
Siraj Uddin   +3 more
doaj   +3 more sources

Global Conharmonic Concept Type Nearly Kahler Manifold

open access: yesTikrit Journal of Pure Science, 2023
The concept of permanence conharmonic type Nearly Kahler manifold conditions are obtained when the Nearly Kahler manifold is a manifold conharmonic constant type.
Ali A. Shihab
doaj   +1 more source

K- constant type Kahler and Nearly Kahler manifolds for conharmonic curvature tensor

open access: yesTikrit Journal of Pure Science, 2023
The constant of permanence conharmonic type kahler and nearly kahler manifold conditions are obtained when the Nearly Kahler manifold is a manifold conharmonic constant type (K).
Ali A. Shihab, Rana H. jasim
doaj   +1 more source

Class Nearly kahler Manifold of W – Projective Curvature Tensor

open access: yesTikrit Journal of Pure Science, 2023
The current study deals with new three classes of the  manifold of w – projective curvature tensor. The aim of this paper to calculate differential - geometrical and topological properties closest for new classes , and , through it ,an equivalence ...
Ali Khalaf Ali, A. A.Shihab
doaj   +1 more source

Geometry of concircular curvature tensor of Nearly Kahler manifold

open access: yesTikrit Journal of Pure Science, 2023
In this paper, we study the necessary condition where a nearly Kahler manifold of flat concircular tensor has been found.  And the relationship between these invariants and additional properties of symmetry concircular tensor, as well as geometrical ...
Taha H. Jasim   +2 more
doaj   +1 more source

Nearly Sasakian Manifolds of Constant Type

open access: yesAxioms, 2022
The article deals with nearly Sasakian manifolds of a constant type. It is proved that the almost Hermitian structure induced on the integral manifolds of the maximum dimension of the first fundamental distribution of the nearly Sasakian manifold is a ...
Aligadzhi Rustanov
doaj   +1 more source

Nearly Cosymplectic Manifolds of Constant Type

open access: yesAxioms, 2022
Fundamental identities characterizing a nearly cosymplectic structure and analytical expressions for the first and second structural tensors are obtained in this paper. An identity that is satisfied by the first structural tensor of a nearly cosymplectic
Aligadzhi Rustanov
doaj   +1 more source

N = 1 trinification from dimensional reduction of N = 1, 10D E8 over SU(3)/U(1)×U(1)×Z3 and its phenomenological consequences

open access: yesPhysics Letters B, 2021
We present an extension of the Standard Model that results from the dimensional reduction of the N=1, 10D E8 group over a M4×B0/Z3 space, where B0 is the nearly-Kähler manifold SU(3)/U(1)×U(1) and Z3 is a freely acting discrete group on B0.
George Manolakos   +2 more
doaj   +1 more source

Bubble instabilities of mIIA on AdS$_4\times S^7$

open access: yesSciPost Physics, 2022
We consider compactifications of massive IIA supergravity on a six-sphere. This setup is known to give rise to non-supersymmetric AdS$_4$ vacua preserving SO$(7)$ as well as G$_2$ residual symmetry.
Pieter Bomans, Davide Cassani, Giuseppe Dibitetto, Nicolò Petri
doaj   +1 more source

Home - About - Disclaimer - Privacy