Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Matias NAVARRO"'
Publikováno v:
International Electronic Journal of Geometry. 16:304-333
A null manifold is a differentiable manifold M endowed with a degenerate metric tensor g. In this work we provide sufficient conditions for a null manifold to be isometrically immersed as a hypersurface into a simple connected semi-Riemannian manifol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84e23d822d59426b03dcdabfe9dc826c
https://doi.org/10.36890/iejg.1274307
https://doi.org/10.36890/iejg.1274307
Publikováno v:
Mathematische Nachrichten. 293:1534-1553
We introduce a class of null hypersurfaces of a semi-Riemannian manifold, namely, screen quasi-conformal hypersurfaces, whose geometry may be studied through the geometry of its screen distribution. In particular, this notion allows us to extend some
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dbde180b611533bbf813a8033e85b58
https://doi.org/10.1002/mana.201800494
https://doi.org/10.1002/mana.201800494
Publikováno v:
Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname
instname
The implementation and start-up of economic activities that generate wealth and employment in any municipality require obtaining municipal licenses and authorizations for which the drafting of a technical activity project is mandatory. All the intere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9ad6977657d4935caf280aa106a6daf
https://doi.org/10.6036/10383
https://doi.org/10.6036/10383
Publikováno v:
Developments in Lorentzian Geometry ISBN: 9783031053788
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce26e1a3ceb587fad250269a74a47cc8
https://doi.org/10.1007/978-3-031-05379-5_15
https://doi.org/10.1007/978-3-031-05379-5_15
Publikováno v:
Economics of Transportation. 28:100232
Public transport is central to commuting in most cities. This paper studies the role of public transportation in shaping the urban structure. Its main contribution is to propose a tractable model as a tool to study urban regulations and transport pol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0df2294c5c622d06bbf9eef4680293b8
https://doi.org/10.1016/j.ecotra.2021.100232
https://doi.org/10.1016/j.ecotra.2021.100232
Publikováno v:
Differential Geometry and its Applications. 49:473-495
We study constant angle semi-Riemannian hypersurfaces M immersed in semi-Riemannian space forms, where the constant angle is defined in terms of a closed and conformal vector field Z in the ambient space form. We show that such hypersurfaces belong t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::242a028ac9428f24daf13803677414f6
https://doi.org/10.1016/j.difgeo.2016.10.002
https://doi.org/10.1016/j.difgeo.2016.10.002
Publikováno v:
Journal of Geometry and Physics. 106:256-267
We study the geometry of null hypersurfaces M in generalized Robertson–Walker spacetimes. First we characterize such null hypersurfaces as graphs of generalized eikonal functions over the fiber and use this characterization to show that such hypers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6877c6f66a88289f5c18254447ca6fd2
https://doi.org/10.1016/j.geomphys.2016.04.009
https://doi.org/10.1016/j.geomphys.2016.04.009
Publikováno v:
Mediterranean Journal of Mathematics. 15
In this paper we develop the notion of screen isoparametric hypersurface for null hypersurfaces of Robertson-Walker spacetimes. Using this formalism we derive Cartan identities for the screen principal curvatures of null screen hypersurfaces in Loren
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f12b74b70336f7707cbe8d7431057321
https://doi.org/10.1007/s00009-018-1262-1
https://doi.org/10.1007/s00009-018-1262-1
Publikováno v:
SAST
Delivering new features to users as fast and efficiently as possible is a common challenge on software development. A continuous delivery and integration pipeline can be used for this purpose, since it provides an automated way to orchestrate a serie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c41167d9866f30f68d1e517565fcf5e6
https://doi.org/10.1145/3266003.3266008
https://doi.org/10.1145/3266003.3266008
Publikováno v:
Differential Geometry and its Applications. 67:101553
We study the principal configurations around an isolated η-umbilical point on a generic spacelike surface S immersed in a null hypersurface M of Minkowski space R 1 4 relative to a well-defined null vector field η orthogonal to the surface S. In th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46cb8c418f1304c4f30b14b487801185
https://doi.org/10.1016/j.difgeo.2019.101553
https://doi.org/10.1016/j.difgeo.2019.101553