• closedAccess   New and old facts about entropy in uniform spaces and topological groups 

      Sanchis López, Manuel; Virili, Simone; Dikranjan, Dikran Elsevier (2012-04)
      In 1965 Adler, Konheim and McAndrew defined the topological entropy of a continuous self-map of a compact space. In 1971 Bowen extended this notion to uniformly continuous self-maps of (not necessarily compact) metric ...
    • openAccess   Some new results on the Chu duality of discrete groups 

      Hernández, Salvador; Wu, Ta-Sun Springer Verlag (2005)
      This paper deals mainly with the Chu duality of discrete groups. Among other results, we give sufficient conditions for an FC group to satisfy Chu duality and characterize when the Chu quasi-dual and the Takahashi ...