Results 31 to 40 of about 912 (205)

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

Advanced Physics Research, EarlyView.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang, Yong‐shuai Li, Jin‐hui Chen   +2 more
wiley   +1 more source

Metrics with homogeneous geodesics on flag manifolds [PDF]

, 2002
summary:A geodesic of a homogeneous Riemannian manifold $(M=G/K, g)$ is called homogeneous if it is an orbit of an one-parameter subgroup of $G$. In the case when $M=G/H$ is a naturally reductive space, that is the $G$-invariant metric $g$ is defined by ...
Alekseevsky, Dmitri, Arvanitoyeorgos, Andreas   +1 more
core  

Survey on homogeneous geodesics

, 1970
A survey on homogeneous geodesics on homogeneous Riemannian and pseudo- Riemannian manifolds, Riemannian and pseudo-Riemannian g.o. spaces and pseudo-Riemannian almost g.o.
Dušeki, Zdenek
core   +1 more source

An analogue of Bauer’s theorem for closed orbits of skew products [PDF]

, 2008
In this article we prove an analogue of Bauer’s theorem from algebraic number theory in the context of hyperbolic ...
Mark Pollicott, Parry, William, Pollicott, Mark, William Parry   +3 more
core   +1 more source

Surface Consistent Seismic Hazard Assessment in the Shillong Plateau, Northeast India: A Probabilistic Approach Using Multiple Source Models and a Logic Tree Framework

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin, William Kumar Mohanty, Eleftheria Papadimitriou   +2 more
wiley   +1 more source

Geodesics and magnetic curves in the 4-dim almost Kähler model space F4

Complex Manifolds
We study geodesics and magnetic trajectories in the model space F4{{\rm{F}}}^{4}. The space F4{{\rm{F}}}^{4} is isometric to the 4-dim simply connected Riemannian 3-symmetric space due to Kowalski. We describe the solvable Lie group model of F4{{\rm{F}}}^
Erjavec Zlatko, Inoguchi Jun-ichi
doaj   +1 more source

Geodesically Complete Lorentzian Metrics on Some Homogeneous 3 Manifolds

Symmetry, Integrability and Geometry: Methods and Applications, 2008
In this work it is shown that a necessary condition for the completeness of the geodesics of left invariant pseudo-Riemannian metrics on Lie groups is also sufficient in the case of 3-dimensional unimodular Lie groups, and not sufficient for 3 ...
Alberto Medina, Shirley Bromberg
doaj   +1 more source

Geodesics in reductive homogeneous spaces [PDF]

Tsukuba Journal of Mathematics, 1995
The author studies geodesics in reductive homogeneous spaces satisfying certain conditions. He shows that some Kähler \(C\)-spaces with second Betti number equal to one and connected semisimple Lie groups with certain left invariant metrics are examples of those spaces.
openaire   +3 more sources

Tropicalization of the Temperate Zone: Spatiotemporal Variability of Winter Warming and Declining Freeze Days Across the United States

International Journal of Climatology, EarlyView.
Unique characteristics of winter daily minimum (Tmin) and maximum (Tmax) temperatures and freeze days across the conterminous United States from 1952 to 2024 are examined. Results show spatial heterogeneity in Tmin/Tmax warming rates across the tropical‐temperate transition zone in the southeastern United States, and that the highest temperature on the
Vincent M. Brown, Derek T. Thompson, Buren B. DeFee II, Michael J. Osland, Barry D. Keim   +4 more
wiley   +1 more source

Riemannian generalized C-spaces with homogeneous geodesics [PDF]

Filomat, 2019
We investigate homogeneous geodesics in a class of homogeneous spaces G/K' called generalized C-spaces. We give necessary conditions so that a G-invariant metric on G/K' is a g.o. metric.
Arvanitoyeorgos, Andreas, Qin, Huajun, Wang, Yu, Zhao, Guosong   +3 more
openaire   +2 more sources