Results 11 to 20 of about 32,179 (312)

Geodesic flows in cosmology [PDF]

Journal of Physics: Conference Series, 2008
In this brief note we discuss geodesic flows that correspond to cosmological solutions in higher-dimensional supergravity. On the one hand, we explain that S-brane solutions are in one-to-one correspondence with geodesic curves on the moduli space through dimensional reduction over the brane worldvolume.
Bergshoeff, Eric, Chemissany, Wissam, Ploegh, Andre, Van Riet, Thomas   +3 more
openaire   +3 more sources

New Generalization of Geodesic Convex Function

Axioms, 2023
As a generalization of a geodesic function, this paper introduces the notion of the geodesic φE-convex function. Some properties of the φE-convex function and geodesic φE-convex function are established.
Ohud Bulayhan Almutairi, Wedad Saleh
doaj   +1 more source

Geodesic growth of numbered graph products (code)

, 2023
The files here are a supplement to our paper Geodesic growth of numbered graph products (arXiv:2208.13095). racg.pdf contains detailed calculations using Theorem 6.4 from the above paper.
Vincent Solon, Frank Zheng, Lindsay Marjanski, Kathleen Zopff   +3 more
core   +1 more source

Monitoring Amazon Forests using LandTrendr and MapBiomas: A Case Study from Trincheira Bacajá, Pará (2018–2023) [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The growing pressure on the ecosystems of the Amazon Biorne highlights the need for continuous monitoring of vegetation cover, especially in sensitive areas such as Indigenous lands.
A. P. Cavassim, V. R. A. Almeida, D. Z. Muguio, J. A. S. Centeno   +3 more
doaj   +1 more source

Integrability of Geodesics of Totally Geodesic Metrics [PDF]

, 2019
Analysis of the geodesics in the space of signature $(1,3)$ that splits in two-dimensional distributions resulting from the Weyl tensor eignespaces - hyperbolic and elliptic ones - described in [V. Lychagin, V. Yumaguzhin, \emph{Differential invariants and exact solutions of the Einstein equations}, Anal.Math.Phys.
Kycia, Radosław A., Ułan, Maria
openaire   +2 more sources

On the generalized Jacobi equation. [PDF]

, 2008
The standard text-book Jacobi equation (equation of geodesic deviation) arises by linearizing the geodesic equation around some chosen geodesic, where the linearization is done with respect to the coordinates and the velocities.
Perlick V, Perlick, Volker
core   +1 more source

Geodesics and Translation Curves in ${\mathrm{Sol}}_0^4$

Mathematics, 2023
A translation curve in a Thurston space is a curve such that for given unit vector at the origin, the translation of this vector is tangent to the curve in every point of the curve. In most Thurston spaces, translation curves coincide with geodesic lines.
Zlatko Erjavec
doaj   +1 more source

Variables Influencing the Accuracy of 3D Modeling of Existing Roads Using Consumer Cameras in Aerial Photogrammetry

Sensors, 2018
Point cloud (PC) generation from photogrammetry⁻remotely piloted aircraft systems (RPAS) at high spatial and temporal resolution and accuracy is of increasing importance for many applications.
Juan J. González-Quiñones, Juan F. Reinoso-Gordo, Carlos A. León-Robles, José L. García-Balboa, Francisco J. Ariza-López   +4 more
doaj   +1 more source

Construction of Developable Surface with Geodesic or Line of Curvature Coordinates

Journal of New Theory, 2021
In this paper, a developable surface with geodesic or line of curvature coordinates is constructed in the Euclidean 3-space. A developable surface is coordinated by two families of parametric curves, base curves (directrices) and lines (rulings).
Nabil Althibany
doaj   +1 more source

From Normal Surfaces to Normal Curves to Geodesics on Surfaces

Axioms, 2017
This paper gives a study of a two dimensional version of the theory of normal surfaces; namely, a study o normal curves and their relations with respect to geodesic curves.
Eli Appleboim
doaj   +1 more source