Results 21 to 30 of about 116,829 (327)

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

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

Rigidity of negatively curved geodesic orbit Finsler spaces [PDF]

open access: yes, 2016
We prove some rigidity results on geodesic orbit Finsler spaces with non-positive curvature. In particular, we show that a geodesic Finsler space with strictly negative flag curvature must be a non-compact Riemannian symmetric space of rank one.Comment ...
Deng, Shaoqiang, Xu, Ming
core   +3 more sources

Non-positive curvature and the Ptolemy inequality [PDF]

open access: yes, 2007
We provide examples of non-locally compact geodesic Ptolemy metric spaces which are not uniquely geodesic. On the other hand, we show that locally compact, geodesic Ptolemy metric spaces are uniquely geodesic.
A. Lytchak   +3 more
core   +1 more source

Spaces of geodesics: products, coverings, connectedness [PDF]

open access: yesGeometriae Dedicata, 1996
We continue our study of the space of geodesics of a manifold with linear connection. We obtain sufficient conditions for a product to have a space of geodesics which is a manifold. We investigate the relationship of the space of geodesics of a covering manifold to that of the base space.
Beem, John K.   +2 more
openaire   +2 more sources

Some aspects of Isbell-convex quasi-metric spaces

open access: yesApplied General Topology, 2018
We introduce and investigate the concept of geodesic bicombing in T0-quasi-metric spaces. We prove that any Isbell-convex T0-quasi-metric space admits a geodesic bicombing which satisfies the equivariance property.
Olivier Olela Otafudu
doaj   +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

Is the shell-focusing singularity of Szekeres space-time visible? [PDF]

open access: yes, 2007
The visibility of the shell-focusing singularity in Szekeres space-time—which represents quasispherical dust collapse—has been studied on numerous occasions in the context of the cosmic censorship conjecture. The various results derived have assumed that
Debnath, Ujjal, Nolan, Brien C.
core   +1 more source

Asymptotic behavior of resolvents of equilibrium problems on complete geodesic spaces

open access: yesDemonstratio Mathematica, 2023
In this article, we discuss equilibrium problems and their resolvents on complete geodesic spaces. In particular, we consider asymptotic behavior and continuity of resolvents with positive parameter in a complete geodesic space whose curvature is bounded
Kimura Yasunori, Shindo Keisuke
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.
Niculescu, Constantin P.   +1 more
openaire   +1 more source

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