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Bounded sets in topological groups

  • Autores: Cristina Chis
  • Directores de la Tesis: Salvador Hernández Muñoz (dir. tes.), María Vicenta Ferrer González (dir. tes.)
  • Lectura: En la Universitat Jaume I ( España ) en 2010
  • Idioma: inglés
  • ISBN: 9788469347829
  • Número de páginas: 120
  • Tribunal Calificador de la Tesis: Manuel Sanchís López (presid.), Sergio Macario (secret.), Enrique Navarro Torres (voc.), Boaz Tsaban (voc.), María Jesús Chasco Ugarte (voc.)
  • Materias:
  • Enlaces
    • Tesis en acceso abierto en: TDX
  • Resumen
    • A boundedness structure (bornology) on a topological space is an ideal of subsets containing all singletons, that is, closed under taking subsets and unions of finitely many elements. In this paper we deal with the structure of the whole family of bounded subsets rather than the specific properties of them by means of certain functions that we define on a metrizable topological group. Our motivation is twofold: on the one hand, we obtain useful information about the structural features of certain remarkable classes of bounded systems, cofinality, local properties, etc. For example, we estimate the cofinality of these boundedness notions.

      In the second part of the paper, we apply duality methods in order to obtain estimations of the size of a local base for an important class of groups. This translation, which has been widely exhibited in the Pontryagin-van Kampen duality theory of locally compact abelian groups, is often very relevant and has been extended by many authors to more general classes of topological groups. In this work we follow basically the pattern and terminology given by Vilenkin in 1998.


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