Mathematics (Oct 2022)

Compactness in Groups of Group-Valued Mappings

  • Diana Caponetti,
  • Alessandro Trombetta,
  • Giulio Trombetta

DOI
https://doi.org/10.3390/math10213973
Journal volume & issue
Vol. 10, no. 21
p. 3973

Abstract

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We introduce the concepts of extended equimeasurability and extended uniform quasiboundedness in groups of group-valued mappings endowed with a topology that generalizes the topology of convergence in measure. Quantitative characteristics modeled on these concepts allow us to estimate the Hausdorff measure of noncompactness in such a contest. Our results extend and encompass some generalizations of Fréchet–Šmulian and Ascoli–Arzelà compactness criteria found in the literature.

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