Results 11 to 20 of about 531 (177)

Levi-Civita Ricci-Flat Doubly Warped Product Hermitian Manifolds

open access: yesAdvances in Mathematical Physics, 2022
Let M1,g and M2,h be two Hermitian manifolds. The doubly warped product (abbreviated as DWP) Hermitian manifold of M1,g and M2,h is the product manifold M1×M2 endowed with the warped product Hermitian metric G=f22g+f12h, where f1 and f2 are positive ...
Qihui Ni   +3 more
doaj   +1 more source

First Natural Connection on Riemannian Π-Manifolds

open access: yesMathematics, 2023
A natural connection with torsion is defined, and it is called the first natural connection on the Riemannian Π-manifold. Relations between the introduced connection and the Levi–Civita connection are obtained.
Hristo Manev
doaj   +1 more source

Null-Projectability of Levi-Civita Connections

open access: yesResults in Mathematics, 2023
15 ...
Andrzej Derdzinski, Kirollos Masood
openaire   +3 more sources

Magnetic X‐ray techniques

open access: yesMajor Reference Works, Page 169-176., 2023
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
Gerrit van der Laan C. Chantler   +2 more
wiley  

+1 more source

On the geometry of sub-Riemannian manifolds equipped with a canonical quarter-symmetric connection

open access: yesДифференциальная геометрия многообразий фигур, 2023
In this article, a sub-Riemannian manifold of contact type is under­stood as a Riemannian manifold equipped with a regular distribution of codimension-one and by a unit structure vector field orthogonal to this distribution. This vector field is called a
S. V. Galaev
doaj   +1 more source

Stability of the Levi-Civita tensors and an Alon–Tarsi type theorem

open access: yesComptes Rendus. Mathématique, 2023
We show that the Levi-Civita tensors are semistable in the sense of Geometric Invariant Theory, which is equivalent to an analogue of the Alon–Tarsi conjecture on Latin squares.
Yeliussizov, Damir
doaj   +1 more source

A new look at Levi-Civita connection in noncommutative geometry [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2021
We prove the existence and uniqueness of Levi-Civita connections for strongly [Formula: see text]-compatible pseudo-Riemannian metrics on tame differential calculi. Such pseudo-Riemannian metrics properly contain the classes of bilinear metrics as well as their conformal deformations. This extends the previous results in [J. Bhowmick, D. Goswami and S.
Jyotishman Bhowmick   +2 more
openaire   +2 more sources

On Possible Minimal Length Deformation of Metric Tensor, Levi-Civita Connection, and the Riemann Curvature Tensor

open access: yesPhysics, 2023
The minimal length conjecture is merged with a generalized quantum uncertainty formula, where we identify the minimal uncertainty in a particle’s position as the minimal measurable length scale.
Fady Tarek Farouk   +3 more
doaj   +1 more source

On the two-point boundary value problem for quadratic second-order differential equations and inclusions on manifolds

open access: yesAbstract and Applied Analysis, 2006
The two-point boundary value problem for second-order differential inclusions of the form (D/dt)m˙(t)∈F(t,m(t),m˙(t)) on complete Riemannian manifolds is investigated for a couple of points, nonconjugate along at least one geodesic of Levi-Civitá ...
Yuri E. Gliklikh, Peter S. Zykov
doaj   +2 more sources

Singular Minimal Surfaces which are Minimal

open access: yesUniversal Journal of Mathematics and Applications, 2021
In the present paper, we discuss the singular minimal surfaces in Euclidean $3-$space $\mathbb{R}^{3}$ which are minimal. Such a surface is nothing but a plane, a trivial outcome.
Ayla Erdur Kara   +2 more
doaj   +1 more source

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