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Mostrando ítems 191-200 de 284
Artículo
Cellular covers of local groups
(Springer, 2018-12)
We prove that, in the category of groups, the composition of a cellularization and a localization functor need not be idempotent. This provides a negative answer to a question of Emmanuel Dror Farjoun.
Artículo
¿Bastan solo seis enlaces para conectar a dos personas cualesquiera en el mundo?
(Federación Iberoamericana de Educación Matemática, 2013-03)
En este artículo se le presenta una novedosa herramienta metodológica al profesor de Matemáticas de Bachillerato consistente en la descripción de un problema en principio no relacionado con las Matemáticas, la denominada ...
Ponencia
Primeras mujeres farmaceúticas en España
(Dykinson, 2014)
Continuando la línea de investigación iniciada por uno de los autores relativa a mostrar las biografías de mujeres españolas de primeros del siglo pasado, pioneras de la ciencia aunque auténticas desconocidas a la vez para ...
Artículo
Minimal slant submanifolds of the smallest dimension in S-manifolds
(European Mathematical Society, 2005)
We study slant submanifolds of S-manifolds with the smallest dimension, specially minimal submanifolds and establish some relations between them and anti-invariant submanifolds in S-manifolds, similar to those ones proved ...
Tesis Doctoral
Artículo
On the connectivity of skeletons of pseudomanifolds with boundary
(Mathematical Institute, Academy of Sciences of the Czech Republic, 2002)
In this note we show that 1-skeletons and 2-skeletons of n-pseudomanifolds with full boundary are (n+ 1)-connected graphs and n-connected 2-complexes, respectively. This generalizes previous results due to Barnette and Woon.
Artículo
The Freudenthal compactification of tree-like generalized continua
(Auburn University, 2013)
Tree-likeness of generalized continua is defined by means of inverse limits of locally finite trees with proper bonding maps. The main theorem of this paper shows that the Freudenthal compactification preserves and reflects ...
Artículo
Graph operations and Lie algebras
(Taylor & Francis, 2013)
This paper deals with several operations on graphs and combinatorial structures linking them with their associated Lie algebras. More concretely, our main goal is to obtain some criteria to determine when there exists a ...
Ponencia
Θ-critical sets of Latin squares having Θ as a principal autotopism
(2006)
Any principal autotopism Θ of a Latin square L ∈ LS(n), whose elements are in a set N of n symbols, gives a significant information about the symmetry of L. Although Θ-critical sets of L can be then used in Cryptography ...
Artículo
Critical elements of proper discrete Morse functions
(Editorial Board of Mathematica Pannonica, 2008)
The aim of this paper is to study the notion of critical element of a proper discrete Morse function defined on non-compact graphs and surfaces. It is an extension to the non-compact case of the concept of critical simplex ...