Artículos (Geometría y Topología): Recent submissions
Now showing items 1-20 of 207
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Article
Outerplanarity without accumulation in the cylinder and the Möbius Band
(Board, 2013)In this paper we explicitly characterize the outer-embeddings without vertex accumulation points in the open cylinder and ...
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Article
Outer-embeddability in certain pseudosurfaces arising from three spheres
(North Holland (Elsevier), 2010)In this paper we study graph embeddings in pseudosurfaces formed by three spheres sharing at most two points each pair, ...
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Article
A new method for classifying complex filiform Lie algebras
(Elsevier Science, 2001)In this paper, we describe a new method to classify complex filiform Lie algebras based on the concept of isomorphism ...
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A Hahn-Mazurkiewicz Theorem for generalized Peano continua
(Springer, 1998)S. Mazurkiewicz remarked after his proof of the celebrated HahnMazurkiewicz Theorem ([5]) that any generalized Peano ...
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Article
On the planarity of Peano generalized continua: An extension of a theorem of S. Claytor
(Institute of Mathematics, Polish Academy of Sciences, 1998)We extend a theorem of S. Claytor in order to characterize the Peano generalized continua which are embeddable into the ...
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Chapter of Book
On irreductible triangulations of Punctured Torus and Punctured Klein Bottle
(Editorial UCA, 2007)We extend Lawrencenko and Negami’s results in [4, 5] by establishing lower and upper bounds for the number of irreducible triangulations of the punctured torus and the punctured Klein bottle.
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Article
Some Asian Women Pioneers of Chemistry and Pharmacy
(MDPI, 2022)At present, several countries on the Asian continent are still very closed off to the idea of allowing not only the work ...
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Article
Gertrude Belle Elion, Chemist and Pharmacologist, Discoverer of Highly Relevant Active Substances
(MDPI, 2022-05)Gertrude Belle Elion was a woman who had to overcome many difficulties to achieve her dream of studying to be able to cure ...
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Article
Análisis de errores en la conceptualización y simbolización de ecuaciones diferenciales en alumnos de química
(Grupo editorial Iberoamérica, 1996-08)Este artículo recoge un análisis de los errores más frecuentes cometidos por estudiantes de Matemáticas de 2° curso de la ...
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Article
Weak- Z-Structures and one-relator groups
(ScienceDirect, 2022-07-22)Motivated by the notion of boundary for hyperbolic and groups, Bestvina [2] introduced the notion of a (weak) -structure ...
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Article
A topological equivalence relation for finitely presented groups
(ScienceDirect, 2020-01-07)In this paper, we consider an equivalence relation within the class of finitely presented discrete groups attending to ...
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Article
Lifting Semistability in Finitely Generated Ascending HNN-Extensions
(Association des Annales de l'Institut Fourier, 2023-07-03)If a finitely generated group G maps epimorphically onto a group H, we are interested in the question: When does the ...
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Proper 2–equivalences between infinite ended finitely presented groups
(Mathematical Sciences Publishers, 2023-03-27)Recall that two finitely presented groups G and H are “proper 2–equivalent” if they can be realized by finite 2–dimensional ...
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Article
Quasi-isometries and proper homotopy: The quasi-isometry invariance of proper 3-realizability of groups
(American Mathematical Society, 2019-04-01)We recall that a finitely presented group G is properly 3-realizable if for some finite 2-dimensional CW-complex X with ...
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Article
A Discrete Representation of the Second Fundamental Form
(MDPI, 2022-06-29)We present a new method to obtain a combinatorial representation for the behaviour of a submanifold isometrically immersed ...
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Article
Can trans-S-manifolds be defined from the Gray-Hervella classification for almost Hermitian manifolds?
(Springer, 2022-04-30)Recently, trans-S-manifolds have been defined as a wide class of metric f-manifolds which includes, for instance, f-Kenmotsu ...
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Evolution algebras whose evolution operator is a homomorphism
(Wiley, 2021-09-30)This article deals with the evolution operator of evolution algebras. We give a theorem that allows to characterize these ...
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Article
On localizations of quasi-simple groups with given countable center
(EMS Press, 2020-10-22)A group homomorphism i:H→G is a localization of H, if for every homomorphism φ:H→G there exists a unique endomorphism ψ:G→G ...
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Article
Fundamental theorems of Morse theory on posets
(AIMS, 2022-01-13)We prove a version of the fundamental theorems of Morse theory in the setting of finite partially ordered sets. By using ...
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Article
Generators and closed classes of groups
(Universitat Autònoma de Barcelona, Departament de Matemàtiques, 2021)We show that, in the category of groups, every singly-generated class which is closed under isomorphisms, direct limits, ...