Results 11 to 20 of about 12,537 (310)

On the geometry of spaces of oriented geodesics [PDF]

open access: yesAnnals of Global Analysis and Geometry, 2011
Let M be either a simply connected pseudo-Riemannian space of constant curvature or a rank one Riemannian symmetric space (other than the octonion hyperbolic plane), and consider the space L(M) of oriented geodesics of M. The space L(M) is a smooth homogeneous manifold and in this paper we describe all invariant symplectic structures, (para)complex ...
Alekseevsky, Dmitri V.   +2 more
openaire   +3 more sources

Generating Generalized Cylinder with Geodesic Base Curve According to Darboux Frame

open access: yesJournal of New Theory, 2021
This paper aims to design a generalized cylinder with a geodesic base curve according to the Darboux frame in Euclidean 3-space. A generalized cylinder is a special ruled surface that is constructed by a continuous fixed motion of a generator line called
Nabil Althibany
doaj   +1 more source

Geodesics in Lewis space–time [PDF]

open access: yesJournal of Mathematical Physics, 1998
The geodesic equations are integrated for the Lewis metric and the effects of the different parameters appearing in the Weyl class on the motion of test particles are brought out. The appearance of a force parallel to the axial axis is without Newtonian analog and deserves particular attention.
Herrera, L., Santos, N. O.
openaire   +3 more sources

Chaotic motion around a black hole under minimal length effects

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We use the Melnikov method to identify chaotic behavior in geodesic motion perturbed by the minimal length effects around a Schwarzschild black hole. Unlike the integrable unperturbed geodesic motion, our results show that the perturbed homoclinic orbit,
Xiaobo Guo   +4 more
doaj   +1 more source

On canonical quasi-geodesic mappings of recurrent-parabolic spaces

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2018
Studying of the entered earlier quasi-geodesic mappings of recurrent parabolic spaces continues. The express class of such mappings - canonical quasi-geodesic mappings is allocated. Geometrical objects, invariant under considered mappings are constructed.
Ірина Миколаївна Курбатова   +1 more
doaj   +1 more source

On the generalized Jacobi equation. [PDF]

open access: yes, 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

Revisiting geodesic observers in cosmology

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Geodesic observers in cosmology are revisited. The coordinates based on freely falling observers introduced by Gautreau in de Sitter and Einstein-de Sitter spaces (and, previously, by Gautreau and Hoffmann in Schwarzschild space) are extended to general ...
Geneviève Vachon   +2 more
doaj   +1 more source

Fan’s inequality in geodesic spaces

open access: yesApplied Mathematics Letters, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Constantin P. Niculescu, Ionel Roventa
openaire   +1 more source

Generating Geodesic Flows and Supergravity Solutions [PDF]

open access: yes, 2009
We consider the geodesic motion on the symmetric moduli spaces that arise after timelike and spacellike reductions of supergravity theories. The geodesics correspond to timelike respectively spacelike p-brane Solutions when they are lifted over a p ...
Trigiante, Mario   +10 more
core   +1 more source

Iterative Sequences for a Finite Number of Resolvent Operators on Complete Geodesic Spaces

open access: yesAxioms, 2021
We consider Halpern’s and Mann’s types of iterative schemes to find a common minimizer of a finite number of proper lower semicontinuous convex functions defined on a complete geodesic space with curvature bounded above.
Kengo Kasahara, Yasunori Kimura
doaj   +1 more source

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