Compactness in lattice-valued function spaces

  • Authors:
  • Gunther Jäger

  • Affiliations:
  • Department of Statistics, Rhodes University, Grahamstown, South Africa

  • Venue:
  • Fuzzy Sets and Systems
  • Year:
  • 2010

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Abstract

We study conditions which ensure the compactness and weak relative compactness of a set of mappings between two lattice-valued convergence spaces. We consider lattice-valued pointwise convergence and lattice-valued continuous convergence. A suitable notion of even continuity for subsets of a function space is introduced which allows to pass from compactness with respect to the lattice-valued pointwise convergence to compactness with respect to lattice-valued continuous convergence. It is shown that with a regularity condition for the second space, we can deduce compactness conditions for sets of continuous mappings between two lattice-valued convergence spaces.