English

Arzel\`a-Ascoli theorem via Wallman compactification

General Topology 2016-05-10 v3 Functional Analysis

Abstract

In the paper, we recall the Wallman compactification of a Tychonoff space TT (denoted by Wall(T)\text{Wall}(T)) and the contribution made by Gillman and Jerison. Motivated by the Gelfand-Naimark theorem, we investigate the homeomorphism between BC(T,R)BC(T,\mathbb{R}) and BC(Wall(T),R)BC(\text{Wall}(T),\mathbb{R}). Along the way, we attempt to justify the advantages of Wallman compactification over other manifestations of Stone-\v{C}ech compactification. The main result of the paper is a new form of Arzel\`a-Ascoli theorem, which introduces the concept of equicontinuity along ω\omega-ultrafilters.

Keywords

Cite

@article{arxiv.1602.05691,
  title  = {Arzel\`a-Ascoli theorem via Wallman compactification},
  author = {Mateusz Krukowski},
  journal= {arXiv preprint arXiv:1602.05691},
  year   = {2016}
}
R2 v1 2026-06-22T12:52:46.945Z