Compactness in approximation spaces
Volume 67 / 1994
Colloquium Mathematicum 67 (1994), 253-262
DOI: 10.4064/cm-67-2-253-262
Abstract
In this paper we give a characterization of the relatively compact subsets of the so-called approximation spaces. We treat some applications: (1) we obtain some convergence results in such spaces, and (2) we establish a condition for relative compactness of a set lying in a Besov space.
