Now showing items 1-20 of 24

    • Final Degree Project
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      Aplicaciones geométricas del Principio del Máximo para EDPs elípticas 

      Cerezo Cid, Alberto (2021-07-01)
      The aim of this work is to give a detailed proof of two results from the theory of constant mean curvature surfaces: ...
    • Article
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      Cellular covers of local groups 

      Flores Díaz, Ramón Jesús; Scherer, Jérôme (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.
    • Article
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      Cellular properties of nilpotent spaces 

      Chachólski, Wojciech; Farjoun, Emmanuel Dror; Flores Díaz, Ramón Jesús; Scherer, Jérôme (Mathematical Sciences Publishers, 2015-10)
      We show that cellular approximations of nilpotent Postnikov stages are always nilpotent Postnikov stages, in particular ...
    • Final Degree Project
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      La conjetura de Sheehan en teoría de grafos 

      Fortes Lorenzo, Sabrina (2023)
      La conjetura de Sheehan en teoría de grafos afirma la inexistencia de grafos hamiltonianos 4-regulares con un único ciclo ...
    • Article
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      Cryptography with right-angled Artin groups 

      Flores Díaz, Ramón Jesús; Kahrobaei, Delaram (Polish Academy of Sciences, 2016)
      In this paper we propose right-angled Artin groups as a platform for secret sharingschemes based on the efficiency (linear ...
    • Final Degree Project
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      Esferas de homología 

      Delgado Tejada, Juan Antonio (2020)
      In this Final Undergraduate Project we will deal with Homology Spheres, spaces with the same integer homology groups of ...
    • Final Degree Project
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      Estructura de los grupos de Artin de ángulo recto 

      Pallares Palencia, Rodrigo (2022-06-22)
      En este Trabajo de Fin de Grado estudiamos la estructura de los grupos de Artin de ángulo recto (RAAGs). La primera parte ...
    • Article
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      Expanders and right-angled Artin groups 

      Flores Díaz, Ramón Jesús; Kahrobaei, Delaram; Koberda, Thomas (World Scientific Publishing Company, 2021)
      The purpose of this paper is to give a characterization of families of expander graphs via right-angled Artin groups. We ...
    • Article
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      Generators and closed classes of groups 

      Flores Díaz, Ramón Jesús; Rodríguez, José L. (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, ...
    • Final Degree Project
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      Grupos de Homotopía Superior 

      Gómez Gutiérrez, Daniel (2023)
      Este Trabajo de Fin de Grado tiene como objetivo presentar los grupos de homotopía y demostrar algunos teoremas fundamentales ...
    • Article
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      Homogeneity test for functional data 

      Flores Díaz, Ramón Jesús; Lillo Rodríguez, Rosa Elvira; Romo Urroz, Juan (Taylor & Francis, 2017)
      In the context of functional data analysis, we propose new two sample tests for homogeneity. Based on some well-known depth ...
    • Article
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      Homotopy idempotent functors on classifying spaces 

      Castellana Vila, Natàlia; Flores Díaz, Ramón Jesús (American Mathematical Society, 2015-02)
      Fix a prime p. Since their definition in the context of Localization Theory, the homotopy functors PBZ/p and CWBZ/p have ...
    • Article
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      K-homology and K-theory for the lamplighter groups of finite groups 

      Flores Díaz, Ramón Jesús; Pooya, Sanaz; Valette, Alain (London Mathematical Society, 2017-08)
      Let F be a finite group. We consider the lamplighter group L = F ≀ Z over F. We prove that L has a classifying space for ...
    • Article
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      Nullification and cellularization of classifying spaces of finite groups 

      Flores Díaz, Ramón Jesús (American Mathematical Society, 2007-04)
      In this note we discuss the effect of the BZ/p-nullification PBZ/p and the BZ/p-cellularization CWBZ/p over classifying ...
    • Article
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      Nullification functors and the homotopy type of the classifying space for proper bundles 

      Flores Díaz, Ramón Jesús (Mathematical Sciences Publishers, 2005-09)
      Let G be a discrete group for which the classifying space for proper G-actions is finite-dimensional. We find a space W ...
    • PhD Thesis
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      On homotopical algebra and quantum field theories 

      Carmona Sánchez, Víctor (2023-07-21)
      Esta memoria está dedicada al estudio de la teoría de homotopía de álgebras operádicas y sus aplicaciones en teoría ...
    • Article
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      On localizations of quasi-simple groups with given countable center 

      Flores Díaz, Ramón Jesús; Rodríguez, José Luis (EMS Press, 2020-10-22)
      A group homomorphism �  ⁣ : � → � i:H→G is a localization of � H, if for every homomorphism �  ⁣ : � → � φ:H→G ...
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      On the classifying space for proper actions of groups with cyclic torsion 

      Antolín Pichel, Yago; Flores Díaz, Ramón Jesús (De Gruyter, 2014-01)
      In this paper we introduce a common framework for describing the topological part of the Baum-Connes conjecture for a ...
    • Article
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      On the idempotency of some composite functors 

      Flores Díaz, Ramón Jesús (Springer, 2012-01)
      We present examples of localization functors whose composition with certain cellularization functors is not idempotent, and vice versa.
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      Polynomial braid combing 

      Flores Díaz, Ramón Jesús; González-Meneses López, Juan (Oxford University Press, 2018)
      We prove that, for n ≥ 3, the minimal dimension of a model of the classifying space of the braid group Bn, and of the pure braid group Pn, with respect to the family of virtually cyclic groups is n.