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New examples of static spacetimes admitting a unique standard decomposition
(SpringerLink, 2019)
In this paper we introduce a new general approach for the study of spacetimes admitting a standard static splitting. This approach allows us to give an alternative proof for the uniqueness of splitting in the spatially ...
Cartografía, geometría y comunicación: cómo narrar la forma del mundo a partir del viaje de Magallanes y ElCano
(Universidad de La Laguna, 2019)
Introducción: El análisis de los mapas en torno a la primera travesía alrededor del mundo es, sin duda, fundamental para explicar el conocimiento de la nueva tierra descubierta. Dicho mapa supone de hecho una de las grandes ...
Spacelike hypersurfaces with functionally bounded mean curvature in Lorentzian warped products and generalized Calabi-Bernstein type problems
(Cambridge University Press, 2019)
We study spacelike hypersurfaces with functionally bounded mean curvature in Lorentzian warped products M = I × f F , where F is a (non-compact) complete Riemannian mani- fold whose universal covering is parabolic. In ...
Profesores en formación de la Universidad del Tolima: un análisis de sus actitudes hacia la Estadística
(UCOPress, 2019)
La estadística es una de las materias más importantes a nivel académico, científico y cotidiano, y, sin embargo, generan en los estudiantes poco sentimiento de agrado y actitudes negativas. En este trabajo se presenta un ...
Mathematical practical sessions with manipulatives: Trainee teachers’ perceptions of their utility
(Education Association of South Africa, 2019)
This study presents the perceptions of trainee teachers regarding the realisation of practical mathematical sessions to expand on the concepts that are taught in primary education using manipulatives. For a 4-month period, ...
Infinitesimal relative position vector fields for observers in a reference frame and applications to conformally stationary spacetimes
(Springer, 2019)
We introduce and analyze the concept of infinitesimal relative position vector field between “infinitesimally nearby” observers, showing the equivalence between different definitions. Through the Fermi–Walker derivative ...