Results 41 to 50 of about 1,691 (159)
Homogeneous Structures and Homogeneous Geodesics of the Hyperbolic Oscillator Group
AxiomsIn this paper, we study some homogeneity properties of a semi-direct extension of the Heisenberg group, known in literature as the hyperbolic oscillator (or Boidol) group, equipped with the left-invariant metrics corresponding to the ones of the oscillator group.
Giovanni Calvaruso +3 more
openaire +3 more sources
Type I Almost-Homogeneous Manifolds of Cohomogeneity One—IV
Axioms, 2018 This paper is one of a series in which we generalize our earlier results on the equivalence of existence of Calabi extremal metrics to the geodesic stability for any type I compact complex almost homogeneous manifolds of cohomogeneity one. In this paper,
Zhuang-Dan Daniel Guan +2 more
doaj +1 more source
Homogeneous Randers spaces admitting just two homogeneous geodesics [PDF]
Archivum Mathematicum, 2019 In the present paper the author considers the problem about the number of homogeneous geodesics on a homogeneous Finsler manifold. A geodesic in a homogeneous manifold is called homogeneous geodesic if it is an orbit of a one-parameter group of isometries.
openaire +2 more sources
Healthy core: Harmonizing brain MRI for supporting multicenter migraine classification studies.
PLoS ONEMulticenter and multi-scanner imaging studies may be necessary to ensure sufficiently large sample sizes for developing accurate predictive models. However, multicenter studies, incorporating varying research participant characteristics, MRI scanners ...
Hyunsoo Yoon +4 more
doaj +1 more source
The Existence of Two Homogeneous Geodesics in Finsler Geometry [PDF]
Symmetry, 2019 The existence of a homogeneous geodesic in homogeneous Finsler manifolds was positively answered in previous papers. However, the result is not optimal. In the present paper, this result is refined and the existence of at least two homogeneous geodesics in any homogeneous Finsler manifold is proved.
openaire +1 more source
Discover GeoscienceClassical variogram analysis groups squared increments by Euclidean separation. This choice is natural in homogeneous or approximately isotropic domains, but it can be misleading in heterogeneous permeability fields where physical coupling is controlled ...
J. J. Segura
doaj +1 more source
Stability of evolving cluster of stars and exotic matter
European Physical Journal C: Particles and FieldsThis paper discusses the phenomenon of evolving spherically symmetric cluster of stars in the presence of an exotic matter. To discuss evolutionary mechanism, we use the Starobinsky model of f(R) gravity as exotic matter and the structure scalars as ...
Wasee Shahid +4 more
doaj +1 more source
Methods for Controlling Electrostatic Discharge and Electromagnetic Interference in Materials
FoundationsMethods for controlling electromagnetic fields in materials are presented that mitigate effects such as electrostatic discharge and electromagnetic/radio frequency interference.
Aris Alexopoulos, David Neudegg
doaj +1 more source
A Recursive Scheme of First Integrals of the Geodesic Flow of a Finsler Manifold
Symmetry, Integrability and Geometry: Methods and Applications, 2007 We review properties of so-called special conformal Killing tensors on a Riemannian manifold $(Q,g)$ and the way they give rise to a Poisson-Nijenhuis structure on the tangent bundle $TQ$.
Willy Sarlet
doaj
Nature CommunicationsThis paper explicates a solution to building correspondences between molecular-scale transcriptomics and tissue-scale atlases. This problem arises in atlas construction and cross-specimen/technology alignment where specimens per emerging technology ...
Kaitlin M. Stouffer +11 more
doaj +1 more source