Results 41 to 50 of about 1,183,540 (276)

Riemannian Curl in Contact Geometry [PDF]

open access: yesInternational Mathematics Research Notices, 2014
16 pages, Theorem 5.2.1 ...
Bouarroudj, S., Ovsienko, Valentin
openaire   +3 more sources

Semi-Invariant Riemannian Submersions with Semi-Symmetric Non-Metric Connection

open access: yesJournal of New Theory, 2021
In this paper, we investigate semi-invariant Riemannian submersion from a Kaehler manifold with semi-symmetric non-metric connection to a Riemannian manifold. We study the geometry of foliations with semi-symmetric non-metric connection.
Ramazan Sarı
doaj   +1 more source

On some conformally einstein manifolds of dimension four [PDF]

open access: yesریاضی و جامعه, 2022
We study an important family of four-dimensional pseudo-Riemannian manifolds, i.e. generalized symmetric spaces, in terms of conformal geometry. Generalized symmetric spaces were introduced by geometers as an extension of symmetric spaces, and a detailed
Amirhesam Zaeim   +2 more
doaj   +1 more source

The Riemannian Geometry of Deep Generative Models [PDF]

open access: yes2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), 2017
Deep generative models learn a mapping from a low-dimensional latent space to a high-dimensional data space. Under certain regularity conditions, these models parameterize nonlinear manifolds in the data space.
Hang Shao, Abhishek Kumar, P. Fletcher
semanticscholar   +1 more source

A Comprehensive Introduction to Sub-Riemannian Geometry

open access: yes, 2019
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or ...
A. Agrachev, D. Barilari, U. Boscain
semanticscholar   +1 more source

Quantum Riemannian geometry and particle creation on the integer line [PDF]

open access: yesClassical and quantum gravity, 2018
We construct noncommutative or ‘quantum’ Riemannian geometry on the integers as a lattice line with its natural 2-dimensional differential structure and metric given by arbitrary non-zero edge square-lengths .
S. Majid
semanticscholar   +1 more source

Riemannian foliations of bounded geometry [PDF]

open access: yesMathematische Nachrichten, 2014
Continuing the study of bounded geometry for Riemannian foliations, begun by Sanguiao, we introduce a chart‐free definition of this concept. Our main theorem states that it is equivalent to a condition involving certain normal foliation charts. For this type of charts, it is also shown that the derivatives of the changes of coordinates are uniformly ...
Jesús A. Álvarez López   +2 more
openaire   +3 more sources

Semi-Slant Submersions from Almost Product Riemannian Manifolds

open access: yesDemonstratio Mathematica, 2016
In this paper, we introduce semi-slant submersions from almost product Riemannian manifolds onto Riemannian manifolds. We give some examples, investigate the geometry of foliations which are arisen from the definition of a Riemannian submersion.
Gündüzalp Yılmaz
doaj   +1 more source

Teleparallel Gravity: Foundations and Observational Constraints—Editorial

open access: yesUniverse, 2021
Einstein’s formulation of general relativity as a theory based on the geometry of curvature was a necessity due to Riemannian geometry being the only fully developed framework at the time [...]
Sebastian Bahamonde, Jackson Levi Said
doaj   +1 more source

Pseudo-Riemannian geodesics and billiards [PDF]

open access: yes, 2009
Many classical facts in Riemannian geometry have their pseudo-Riemannian analogs. For instance, the spaces of space-like and time-like geodesics on a pseudo-Riemannian manifold have natural symplectic structures (just like in the Riemannian case), while ...
Khesin, B., Tabachnikov, S.
core   +2 more sources

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