• closedAccess   Precompact groups and property (T) 

      Ferrer González, María Vicenta; Hernández, Salvador; Uspenskij, Vladimir Elsevier (2013-08)
      For a topological group GG, the dual object View the MathML sourceĜ is defined as the set of equivalence classes of irreducible unitary representations of GG equipped with the Fell topology. It is well known that, if GG ...
    • openAccess   The character of topological groups, via Pontryagin-van Kampen duality 

      Chis, Cristina; Ferrer González, María Vicenta; Hernández, Salvador; Tsaban, Boaz (2011-06)
      The Birkhoff-Kakutani Theorem asserts that a topological group is metrizable if and only if it has countable character. We develop and apply tools for the estimation of the character for a wide class of nonmetrizable ...
    • closedAccess   Uncountable products of determined groups need not be determined 

      Hernández, Salvador; Macario, Sergio; Trigos, Javier Elsevier (2008)
      If H is a dense subgroup of G, we say that H determines G if their groups of characters are topologically isomorphic when equipped with the compact open topology. If every dense subgroup of G determines G, then we say that ...