Results 11 to 20 of about 51,348 (152)

Geometría Descriptiva. Geometría Constructiva [PDF]

open access: yesRevista de Expresión Gráfica en la Edificación, 1999
La Geometría Descriptiva es esencialmente una asignatura de primer curso, es decir, una asignatura de base, formativa, pero no específicamente tecnológica.
Luis Sánchez-Cuenca
doaj   +2 more sources

Secuencias de enseñanza de nociones geométricas y químicas: la Geometría en la escuela secundaria; y la Geometría molecular de la escuela a la universidad

open access: yes, 2020
Este estudio propone dar continuidad al PPID/H044, Las prácticas de enseñanza de las nociones geométricas: dela Geometría en la escuela secundaria a la Geometría molecular en la Universidad.
Arias Mercader, María José
core   +8 more sources

Complete Non-Orientable Minimal Surfaces in ℝ3 and Asymptotic Behavior

open access: yesAnalysis and Geometry in Metric Spaces, 2014
In this paperwe give new existence results for complete non-orientable minimal surfaces in ℝ3 with prescribed topology and asymptotic ...
Alarcón Antonio, López Francisco J.
doaj   +1 more source

Geometría plana neutral

open access: yes, 2021
Este libro contiene un desarrollo axiomático de la geometría plana. El árbol deductivo se construye a partir de los axiomas de Hilbert que reformulan de modo más riguroso los postulados de Euclides.
Rivas Rodríguez, María Teresa [0000-0001-8911-4941]   +2 more
core   +1 more source

Curves in the Lorentz-Minkowski plane: elasticae, catenaries and grim-reapers

open access: yesOpen Mathematics, 2018
This article is motivated by a problem posed by David A. Singer in 1999 and by the classical Euler elastic curves. We study spacelike and timelike curves in the Lorentz-Minkowski plane 𝕃2 whose curvature is expressed in terms of the Lorentzian ...
Castro Ildefonso   +2 more
doaj   +1 more source

On the structure vector field of a real hypersurface in complex quadric

open access: yesOpen Mathematics, 2018
From the notion of Jacobi type vector fields for a real hypersurface in complex quadric Qm we prove that if the structure vector field is of Jacobi type it is Killing when the real hypersurface is either Hopf or compact.
Dios Pérez Juan de
doaj   +1 more source

Isoperimetric and Stable Sets for Log-ConcavePerturbations of Gaussian Measures

open access: yesAnalysis and Geometry in Metric Spaces, 2014
Let be an open half-space or slab in ℝn+1 endowed with a perturbation of the Gaussian measureof the form f (p) := exp(ω(p) − c|p|2), where c > 0 and ω is a smooth concave function depending only onthe signed distance from the linear hyperplane parallel ...
Rosales César
doaj   +1 more source

Locally conformal symplectic nilmanifolds with no locally conformal Kähler metrics

open access: yesComplex Manifolds, 2017
We report on a question, posed by L. Ornea and M. Verbitsky in [32], about examples of compact locally conformal symplectic manifolds without locally conformal Kähler metrics.
Bazzoni Giovanni, Marrero Juan Carlos
doaj   +1 more source

On the Ricci tensor of real hypersurfaces of quaternionic projective space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
We study some conditions on the Ricci tensor of real hypersurfaces of quaternionic projective space obtaining among other results an improvement of the main theorem in [9].
Juan De Dios Perez
doaj   +1 more source

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