Results 31 to 40 of about 51,049 (148)
A New Algebraic Approach to Decision Making in a Railway Interlocking System Based on Preprocess
Mathematical Problems in Engineering, Volume 2018, Issue 1, 2018., 2018 The safety of railway networks is a very important issue. Roughly speaking, it can be split into safety along lines and safety of railway facilities such as stations, junctions, yards, etc. In modern networks the safety along lines is controlled by automatic block systems that do not give clearance to trains to enter a section (block) until the latter ...
Antonio Hernando +3 more
wiley +1 more source
Láser escáner y nubes de puntos. Un horizonte aplicado al análisis arqueológico de edificios
Arqueología de la Arquitectura, 2011 En el siguiente artículo analizamos uno de los más modernos instrumentos de documentación gráfica del patrimonio, el láser escáner. Aunque profundizaremos en todos aquellos aspectos técnicos, logísticos y de método relativos a su empleo, nos centraremos ...
Ismael García-Gómez +2 more
doaj +1 more source
On Integral Manifolds for Leibniz Algebras
Algebra, Volume 2014, Issue 1, 2014., 2014 We discuss several partial solutions to the so‐called “coquecigrue problem” of Loday; these solutions parallel, but also generalize in several directions, the classical Lie group‐Lie algebra correspondence. Our study highlights some clear similarities between the split and nonsplit cases and leads us to a general unifying scheme that provides an answer
Juan Monterde, Fausto Ongay, Pu Zhang
wiley +1 more source
La conjetura de Poincaré: Problema resuelto tras un siglo de nuevas ideas y continuo trabajo
Mètode Science Studies Journal: Annual Review, 2018 La conjetura de Poincaré es un problema topológico, establecido en 1904 por el matemático francés Henri Poincaré, que caracteriza de una manera muy sencilla la esfera tridimensional.
María Teresa Lozano Imízcoz
doaj +1 more source
Espacios de violencia, espacios del habitar
Nóesis, 2020 En este texto buscamos mostrar la necesidad de reconsiderar el espacio como categoría fundamental para evaluar lo común y la violencia que actualmente se ejerce contra éste.
Arturo Romero Contreras
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Smooth Approximation of Lipschitz Functions on Finsler Manifolds
Journal of Function Spaces, Volume 2013, Issue 1, 2013., 2013 We study the smooth approximation of Lipschitz functions on Finsler manifolds, keeping control on the corresponding Lipschitz constants. We prove that, given a Lipschitz function f : M → ℝ defined on a connected, second countable Finsler manifold M, for each positive continuous function ε : M → (0, ∞) and each r > 0, there exists a C1‐smooth Lipschitz ...
M. I. Garrido +3 more
wiley +1 more source
¿Topología de la esencia o esencia de la topología? [PDF]
, 2003 Este trabajo son los dos primeros capítulos del trabajo de grado Hahn- Banach-Tarski, los primeros pasos hacia la versión constructiva de la paradoja de Banach Tarski. Presentado en la Universidad Nacional de Colombia en el año 2003.
Leal, Raúl Andrés
core
On some properties of the asymptotic Samuel function
Mathematische Nachrichten, Volume 298, Issue 7, Page 2401-2423, July 2025.Abstract The asymptotic Samuel function generalizes to arbitrary rings the usual order function of a regular local ring. Here, we explore some natural properties in the context of excellent, equidimensional rings containing a field. In addition, we establish some results regarding the Samuel slope of a local ring.
A. Bravo, S. Encinas, J. Guillán‐Rial
wiley +1 more source
On totally umbilical and minimal surfaces of the Lorentzian Heisenberg groups
Mathematische Nachrichten, Volume 298, Issue 6, Page 1922-1942, June 2025.Abstract This paper has manifold purposes. We first introduce a description of the Gauss map for submanifolds (both spacelike and timelike) of a Lorentzian ambient space and relate the conformality of the Gauss map of a surface to total umbilicity and minimality.
Giovanni Calvaruso +2 more
wiley +1 more source