• 

  Remarks on the finite derived set property 

  Bella, Angelo (Universitat Politècnica de València, 2005-04-01)

  [EN] The finite derived set property asserts that any infinite subset of a space has an infinite subset with only finitely many accumulation points. Among other things, we study this property in the case of a function space ...
• 

  A generalized coincidence point index 

  Benkafadar, N.M.; Benkara-Mostefa, M.C. (Universitat Politècnica de València, 2005-04-01)

  [EN] The paper is devoted to build for some pairs of continuous single-valued maps a coincidence point index. The class of pairs (f, g) satisfies the condition that f induces an epimorphism of the Cech homology groups with ...
• 

  δ-closure, θ-closure and generalized closed sets 

  Cao, Jiling; Ganster, Maximilian; Reilly, Ivan L.; Steiner, Markus (Universitat Politècnica de València, 2005-04-01)

  [EN] We study some new classes of generalized closed sets (in the sense of N. Levine) in a topological space via the associated δ-closure and θ-closure. The relationships among these new classes and existing classes of ...
• 

  Abelization of join spaces of affine transformations of ordered field with proximity 

  Hosková, Sárka (Universitat Politècnica de València, 2005-04-01)

  [EN] Using groups of affine transformations of linearly ordered fields a certain construction of non-commutative join hypergroups is presented based on the criterion of reproducibility of semi-hypergroups which are determined ...
• 

  The character of free topological groups II 

  Nickolas, Peter; Tkachenko, Mikhail (Universitat Politècnica de València, 2005-04-01)

  [EN] A systematic analysis is made of the character of the free and free abelian topological groups on metrizable spaces and compact spaces, and on certain other closely related spaces. In the first case, it is shown that ...

Ver más