Results 11 to 20 of about 29,700 (193)

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   +3 more sources

Levi-Civita connections for a class of spectral triples [PDF]

open access: yesLetters in Mathematical Physics, 2019
minor changes. To appear in Letters in Mathematical Physics.
Bhowmick, Jyotishman   +2 more
openaire   +5 more sources

Levi-Civita Connection

open access: yesCompact Textbooks in Mathematics
AbstractThe Levi-Civita connection of a surface $$f\colon M \to \mathbb {R}^3$$ f : M → ℝ 3 ...
Ulrich Pinkall, Oliver Gross
exaly   +6 more sources

On the (non-)uniqueness of the Levi-Civita solution in the Einstein–Hilbert–Palatini formalism

open access: yesPhysics Letters B, 2017
We study the most general solution for affine connections that are compatible with the variational principle in the Palatini formalism for the Einstein–Hilbert action (with possible minimally coupled matter terms).
Antonio N. Bernal   +5 more
doaj   +3 more sources

Existence and uniqueness of the Levi-Civita connection on noncommutative differential forms

open access: yesAdvances in Mathematics
We combine Hilbert module and algebraic techniques to give necessary and sufficient conditions for the existence of an Hermitian torsion-free connection on the bimodule of differential one-forms of a first order differential calculus. In the presence of the extra structure of a bimodule connection, we give sufficient conditions for uniqueness. We prove
Mesland, Bram, Rennie, Adam
openaire   +4 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

Levi-Civita connections from toral actions

open access: yesJournal of Geometry and Physics, 2022
We construct tame differential calculi coming from toral actions on a class of $\mathrm{C}^*$-algebras. Relying on the existence of a unique Levi-Civita connection on such a calculus, we prove a version of the Bianchi identity. A Gauss-Bonnet theorem for the canonical tame calculus of rank two is studied.
Bhattacharjee, Suvrajit   +2 more
openaire   +2 more sources

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

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