Results 151 to 160 of about 88,622 (197)

Meta‐Golden Riemannian manifolds

Mathematical Methods in the Applied Sciences, 2022
The logarithmic spiral in nature has been given as an example of the golden ratio until now. But recently, it has been shown that this is not true, and the logarithmic spiral has actually been shown to provide the so‐called Meta‐Golden‐Chi ratio. Inspiring from Meta‐Golden‐Chi ratio, we introduce almost Meta‐Golden manifolds, give a characterization ...
Fulya Şahin, Bayram Şahin
openaire   +3 more sources

EQUIMORPHISMS OF RIEMANNIAN MANIFOLDS

Mathematics of the USSR-Izvestiya, 1972
We establish a sufficient condition for stability of Riemannian manifolds, i.e. a property according to which every equimorphism of this manifold can be topologically extended to its absolute.
Efremovich, V. A., Loginov, Eh. A., Tikhomirova, E. S.   +2 more
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Riemannian manifolds

2018
Abstract This chapter is about Riemannian manifolds. It first discusses the metric manifold and the Levi-Civita connection, determining if the metric is Riemannian or Lorentzian. Next, the chapter turns to the properties of the curvature tensor.
Nathalie Deruelle, Jean-Philippe Uzan
openaire   +1 more source

Symmetries on Riemannian Manifolds

Mathematische Nachrichten, 1988
AbstractLocally symmetric KÄHLER manifolds may be characterized as almost HERMITian manifolds with symplectic or holomorphic local geodesic symmetries. We extend the notion of a local geodesic symmetry and in particular, give a similar characterization of all RIEMANNian locally s‐regular manifolds with an s‐structure of odd order.
Ledger, A. J., Vanhecke, L.
openaire   +1 more source

Pseudocomplete Riemannian Analytic Manifolds

Mathematical Notes, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Riemannian manifolds

1993
Abstract Let M be a differentiable manifold. We say that M carries a pseudo Riemannian metric if there is a differentiable field g = (gm} , m ∈ M, of non-degenerate symmetric bilinear forms gm on the tangent spaces Mm of M. This makes the tangent space into an inner product space.
openaire   +1 more source

Generalized Learning Riemannian Space Quantization: A Case Study on Riemannian Manifold of SPD Matrices

IEEE Transactions on Neural Networks and Learning Systems, 2021
Fengzhen Tang, Mengling Fan, Peter Tino
exaly  

Riemannian Manifold Hamiltonian Monte Carlo based subset simulation for reliability analysis in non-Gaussian space

Structural Safety, 2022
Ziqi Wang, Marco Broccardo, Junho Song
exaly  

Maximum margin Riemannian manifold-based hyperdisk for fault diagnosis of roller bearing with multi-channel fusion covariance matrix

Advanced Engineering Informatics, 2022
Xin Li, Yu Yang, Haidong Shao
exaly  

Transfer learning and clustering analysis of epileptic EEG signals on Riemannian manifold

Applied Soft Computing Journal, 2023
Hong He, Yong Hao
exaly