Results 21 to 30 of about 320,618 (278)
Contact-Complex Riemannian Submersions
Mathematics, 2021 A submersion from an almost contact Riemannian manifold to an almost Hermitian manifold, acting on the horizontal distribution by preserving both the metric and the structure, is, roughly speaking a contact-complex Riemannian submersion. This paper deals
Cornelia-Livia Bejan +2 more
doaj +1 more source
Simplexes in Riemannian manifolds [PDF]
Proceedings of the American Mathematical Society, 1993 Existence of a simplex with prescribed edge lengths in Euclidean, spherical, and hyperbolic spaces was studied recently. A simple sufficient condition of this existence is, roughly speaking, that the lengths do not differ too much. We extend these results to Riemannian
openaire +2 more sources
Connections on a non-symmetric (generalized) Riemannian manifold and gravity [PDF]
, 2015 Connections with (skew-symmetric) torsion on a non-symmetric Riemannian manifold satisfying the Einstein metricity condition (non-symmetric gravitation theory (NGT) with torsion) are considered.
S. Ivanov, M. Zlatanovic
semanticscholar +1 more source
Separability in Riemannian Manifolds [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2016 An outline of the basic Riemannian structures underlying the separation of variables in the Hamilton-Jacobi equation of natural Hamiltonian systems.
openaire +3 more sources
Kernel Methods on the Riemannian Manifold of Symmetric Positive Definite Matrices [PDF]
2013 IEEE Conference on Computer Vision and Pattern Recognition, 2013 Symmetric Positive Definite (SPD) matrices have become popular to encode image information. Accounting for the geometry of the Riemannian manifold of SPD matrices has proven key to the success of many algorithms.
Sadeep Jayasumana +4 more
semanticscholar +1 more source
Cohomologies of certain orbifolds [PDF]
, 2013 We study the Bott–Chern cohomology of complex orbifolds obtained as a quotient of a compact complex manifold by a finite group of ...
Angella, Daniele
core +1 more source
On the projections of Laplacians under Riemannian submersions
International Journal of Mathematics and Mathematical Sciences, 2001 We give a condition on Riemannian submersions from a Riemannian manifold M to a Riemannian manifold N which will ensure that it induces a differential operator on N from the Laplace-Beltrami operator on M.
Huiling Le
doaj +1 more source
On Submanifolds in a Riemannian Manifold with a Semi-Symmetric Non-Metric Connection
Symmetry, 2017 In this paper, we study submanifolds in a Riemannian manifold with a semi-symmetric non-metric connection. We prove that the induced connection on a submanifold is also semi-symmetric non-metric connection.
Jing Li, Guoqing He, P. Zhao
semanticscholar +1 more source
Probability Distribution-Based Dimensionality Reduction on Riemannian Manifold of SPD Matrices
IEEE Access, 2020 Representing images and videos with Symmetric Positive Definite (SPD) matrices and utilizing the intrinsic Riemannian geometry of the resulting manifold has proved successful in many computer vision tasks.
Jieyi Ren, Xiao-Jun Wu
doaj +1 more source
Characterizing Humans on Riemannian Manifolds
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2013 In surveillance applications, head and body orientation of people is of primary importance for assessing many behavioral traits. Unfortunately, in this context people are often encoded by a few, noisy pixels so that their characterization is difficult.
TOSATO, DIEGO +3 more
openaire +4 more sources